Inconsistency in Tests #2539

Describe the bug
Entites in test don't have the same fields, it needs custom logic to be parsed

To Reproduce
Steps to reproduce the behavior:

1. Look at DateTimeParser.json => There is Start and Length
2. Look at DateTimeModel.json => There is Start and End
3. Some have a TypeName, others Type and some Typename

It's not hard to make a custom logic to handle all this cases but it would be really nice to have everywhere the same interface.

Expected behavior
Have a uniform interface for all the tests. Also, in some, the answer does not appear in the raw text (space missing or added, or answer in english for a text in another lang).

Additional context
I'm running a benchmark and using those tests to get results but I was wondering about those differences, is it on purpose ?
Thanks a lot for this kind of tests which make a nice dataset.

Have a great day.