Programatically adding filters to sparql query

[Bart van Leeuwen]

Hi,

I'm looking for some documentation on adding additional filters to a 
parsed sparql query

I can do:

Query q = new Query('select ?s ?p ?o where { ?s a sem:Event . ?s ?p ?o 
}');

now I'd like to use the Query object Q to extend this query with a FIlter 
clause.

any documentation pointers are appreciated.

Met Vriendelijke Groet / With Kind Regards
Bart van Leeuwen

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