Sentence 1: She may have been."

Sentence 2: She might have been.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: yeah and it will help tremendously we bought ours five years ago and it's the one thing it seems like you make those payments every month and at the end of the year you've paid all interest and no principles

Sentence 2: We bought ours eighty years ago.
Is this second sentence entailed by the first?

Answer: no

Sentence 1: but i've heard so many statements that i've lost track

Sentence 2: I've lost count of how many stories I've been told.
Is this second sentence entailed by the first?

Answer:
yes