Comment by antoaravinth

Well if you are looking for a huge dataset, I would suggest stack overflow.

https://archive.org/details/stackexchange

I remember I wrote a node script to download all question and dump into my Postgres instance. It was fun, Postgres with an index could able to fetch results super fast

How many answers for this question?

How many questions are unanswered?

With gin index, I could do a free text search as well.