Group of men implies more than one person while man is singular.
The question and answer are below.
Premise: "A group of men standing around talking outdoors."
Hypothesis: "A man stands alone outside."
Do we know that the hypothesis entailed by the premise?
no

It doesn't say if the man went up before his friend.
The question and answer are below.
Premise: "A male topless rock climber is climbing a rock face whilst attached to a safety harness."
Hypothesis: "A man is climbing a rock wall before his friend comes up."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
it is not possible to tell

A band can play a song that is not their favorite.
The question and answer are below.
Test for natural language inference.
Premise: "Five members of a band are playing a song."
Hypothesis: "The band plays their favorite song."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
it is not possible to tell