[soheil]

I think that'd be a much harder thing to do well. You'll have a lot of false negatives. Missing nuances in complex sentences can change the meaning significantly whereas when adding extra words to a list of facts as long the words are pretty neutral meaning-wise you'll be fine.

[visarga]

Haha, text summarisation has been a traditional NLP task for ages. Google Scholar has 16,000 results just from the last year.

More leads: https://paperswithcode.com/task/text-summarization