Q: Premise: "A brown dog is biting a black dog."
Hypothesis: "Dogs are fighting."
Do we know that the hypothesis entailed by the premise?
A: A dog biting another dog implies that they are fighting each other.
The answer is yes.

Q: Premise: "Four men running a marathon."
Hypothesis: "Men are running as fast as they can."
Do we know that the hypothesis entailed by the premise?
A: Not all marathon runners are trying to run as fast as they can.
The answer is it is not possible to tell.

Q: Premise: "A blond girl in a maroon tennis outfit is using a tennis racket to bounce a tennis ball."
Hypothesis: "A girl is playing tennis against her rival."
Do we know that the hypothesis entailed by the premise?
A: The girl may just be playing a simple ball game by herself and not playing tennis against her rival.
The answer is it is not possible to tell.

Q: Given the sentence "A man in black runs a race." can we conclude that "A man dressed in black is running a marathon."?
Options:
- yes
- it is not possible to tell
- no
A:
The race the man is running may not be a marathon.
The answer is it is not possible to tell.