Parse & proof fails for a simpel example

[SICK 3573 ](https://langpro-annotator.hum.uu.nl/annotate/3573)

[Parse and proof] works for other problems, but for some reason, not for this simple problem.
I checked the API call, and both LLFs seem to be generated with entailment and contradiction proofs

Start with the linked SICK 3573 example and the Parse and proof flow. Compare its API response and generated LLFs with problems where parsing and proof work, then identify why this example fails. Done means SICK 3573 parses and proofs successfully while retaining its entailment and contradiction results.

Written by the indexing model from the issue text.