Ok, I found: its untyped. But is this to be expected?
In example I have: ex2:ClearOpeningHeight_1 a ex2:ClearOpeningHeight ; bs:hasUnit unit:M ; bs:hasValue 2.40 ; . Where the not-imported resource is: @prefix unit: <http://qudt.org/vocab/unit#> . This unit gets me to a file on the web in which is defined: <http://qudt.org/vocab/unit/M> a <http://qudt.org/schema/qudt/BaseUnit> ; a <http://qudt.org/schema/qudt/LengthUnit> ; a <http://qudt.org/schema/qudt/MKS-Unit> ; a <http://qudt.org/schema/qudt/Unit> ; <http://qudt.org/schema/qudt/abbreviation> "m" ; <http://qudt.org/schema/qudt/code> "1090" ; <http://qudt.org/schema/qudt/conversionMultiplier> "1"^^xsd:double ; <http://qudt.org/schema/qudt/conversionOffset> "0.0"^^xsd:double ; <http://qudt.org/schema/qudt/description> "The metric and SI base unit of distance. The meter is equal to approximately 1.093 613 3 yards, 3.280 840 feet, or 39.370 079 inches."^^rdf:HTML ; <http://qudt.org/schema/qudt/hasQuantityKind> <http://qudt.org/vocab/quantitykind/Length> ; <http://qudt.org/schema/qudt/id> "U000E1090" ; <http://qudt.org/schema/qudt/longDescription> "The metric and SI base unit of distance. The 17th General Conference on Weights and Measures in 1983 defined the meter as that distance that makes the speed of light in a vacuum equal to exactly 299 792 458 meters per second. The speed of light in a vacuum, $c$, is one of the fundamental constants of nature. The meter is equal to approximately 1.093 613 3 yards, 3.280 840 feet, or 39.370 079 inches." ; <http://qudt.org/schema/qudt/symbol> "m" ; <http://qudt.org/schema/qudt/ucumCaseInsensitiveCode> "M" ; <http://qudt.org/schema/qudt/ucumCaseSensitiveCode> "m" ; <http://qudt.org/schema/qudt/ucumCode> "M" ; <http://qudt.org/schema/qudt/ucumCode> "m" ; <http://qudt.org/schema/qudt/uneceCommonCode> "MTR" ; rdfs:isDefinedBy <http://qudt.org/2.1/vocab/unit> ; rdfs:isDefinedBy <http://qudt.org/vocab/unit> ; rdfs:label "Meter" ; <http://www.w3.org/2004/02/skos/core#exactMatch> <http://dbpedia.org/resource/Metre> ; <http://www.w3.org/2004/02/skos/core#prefLabel> "meter" ; <http://www.w3.org/ns/prov#wasInfluencedBy> <http://en.wikipedia.org/wiki/Metre?oldid=495145797> ; . Ps Steve, the file above is diff. from the one, one could download: IN HERE it says (using the prefix): unit:M a qudt:BaseUnit ; a qudt:LengthUnit ; a qudt:MKS-Unit ; a qudt:Unit ; qudt:abbreviation "m" ; qudt:code "1090" ; qudt:conversionMultiplier "1"^^xsd:double ; qudt:conversionOffset "0.0"^^xsd:double ; qudt:description "The metric and SI base unit of distance. The meter is equal to approximately 1.093 613 3 yards, 3.280 840 feet, or 39.370 079 inches."^^rdf:HTML ; qudt:hasQuantityKind quantitykind:Length ; qudt:id "U000E1090" ; qudt:longDescription "The metric and SI base unit of distance. The 17th General Conference on Weights and Measures in 1983 defined the meter as that distance that makes the speed of light in a vacuum equal to exactly 299 792 458 meters per second. The speed of light in a vacuum, $c$, is one of the fundamental constants of nature. The meter is equal to approximately 1.093 613 3 yards, 3.280 840 feet, or 39.370 079 inches." ; qudt:symbol "m" ; qudt:ucumCaseInsensitiveCode "M" ; qudt:ucumCaseSensitiveCode "m" ; qudt:ucumCode "M" ; qudt:ucumCode "m" ; qudt:uneceCommonCode "MTR" ; rdfs:isDefinedBy <http://qudt.org/2.1/vocab/unit> ; rdfs:label "Meter" ; skos:exactMatch <http://dbpedia.org/resource/Metre> ; skos:prefLabel "meter" ; prov:wasInfluencedBy <http://en.wikipedia.org/wiki/Metre?oldid=495145797> ; . Dr. ir. H.M. (Michel) Böhms Senior Data Scientist T +31888663107 M +31630381220 E michel.bo...@tno.nl<mailto:michel.bo...@tno.nl> Location<https://www.google.com/maps/place/TNO+-+Locatie+Delft+-+Stieltjesweg/@52.000788,4.3745183,17z/data=!3m1!4b1!4m5!3m4!1s0x47c5b58c52869997:0x56681566be3b8c88!8m2!3d52.000788!4d4.376707> [cid:image001.gif@01D56A32.FB3A7900]<http://www.tno.nl/> This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. TNO accepts no liability for the content of this e-mail, for the manner in which you use it and for damage of any kind resulting from the risks inherent to the electronic transmission of messages. Van: 'Bohms, H.M. (Michel)' via TopBraid Suite Users <topbraid-users@googlegroups.com> Verzonden: Friday, September 13, 2019 12:33 PM Aan: topbraid-users@googlegroups.com Onderwerp: [topbraid-users] dereferencing ok? [cid:image003.jpg@01D56A32.6BF38C50] What is the exact meaning of the world before unit:M? - ok, found but not imported, available on the web, or - not found (I am in transition from qudt2.0 to 2.1..from impprting to referencing, and now wondering if things are ok...) When I change unit to say non-existing MZ situation is the same so that does not tell me much (only that my unit:M is not found yet too). Thx for advice, Michel Ps code attached. Example using upper ont. Basicsemantics (not importing now qudt2.1 stuff). Dr. ir. H.M. (Michel) Böhms Senior Data Scientist T +31888663107 M +31630381220 E michel.bo...@tno.nl<mailto:michel.bo...@tno.nl> Location<https://www.google.com/maps/place/TNO+-+Locatie+Delft+-+Stieltjesweg/@52.000788,4.3745183,17z/data=!3m1!4b1!4m5!3m4!1s0x47c5b58c52869997:0x56681566be3b8c88!8m2!3d52.000788!4d4.376707> [cid:image001.gif@01D56A32.FB3A7900]<http://www.tno.nl/> This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. 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