GitHub user hiromipaw closed a discussion: Parse JSON array containing tuples

I have to parse a JSON structure consisting of an array containing a tuple with 
a string and a Float64. 

Ex:
``` 
{ "elapsed_seconds": [
              [
                "GENERAL:LAUNCHED",
                0.0
              ],
              [
                "GENERAL:EXTENDED",
                0.309999942779541
              ],
              [
                "GENERAL:EXTENDED",
                0.7200000286102295
              ],
              [
                "GENERAL:EXTENDED",
                0.9600000381469727
              ],
              [
                "GENERAL:BUILT",
                0.9600000381469727
              ],
              [
                "GENERAL:CLOSED",
                63.0
              ]
            ]
 }
```

I have been trying to use a list object but it seems that entails that all the 
elements of the list have the same data type.
Do you have any idea if it is possible to parse something like this? I have 
years of historical data, so I won't be able to easily change the JSON 
structure, even though I am aware these object are not the best possible way to 
write json.

GitHub link: https://github.com/apache/datafusion/discussions/7188

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