QUESTION: Given the sentence "A man sits down and plays a public piano." is it true that "The man is playing for his wife."?

Let's solve it slowly: Not all piano playing by a man is done for his wife.
The answer is it is not possible to tell.

QUESTION: Test for natural language inference.
Premise: "Two women in leggings and tutus are talking on the sidewalk."
Hypothesis: "Tall humans talking."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: Women wearing leggings and tutus can be any height and are not necessarily tall.
The answer is it is not possible to tell.

QUESTION: Given the sentence "Here is a picture of a girl wearing a shirt half ways up and standing behind a woman who is looking down." is it true that "A girl in a dress is in front of a woman looking up."?

Let's solve it slowly:
A girl is either standing behind a woman or in front of a woman.
The answer is no.