Student asked: Premise: "Two old people look on at a guy selling something for 1.20 euro."
Hypothesis: "Two old people are waiting to see if the sale happens because they want to buy the item."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. Two old people look on at a guy selling something for 1.20 euro. does not indicate that they are waiting to see if the sale happens because they want to buy the item. The answer is it is not possible to tell.


Student asked: Premise: "Two men fighting in front of an audience."
Hypothesis: "Two men playing soccer."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. They can't fight in front of an audience and play soccer at the same time. The answer is no.


Student asked: Given the sentence "A man on a bicycle sits at a stoplight with headphones on." is it true that "A man is on an expensive bicycle at a stoplight."?
Teacher's response: Let's think. A bicycle can be cheap and not necessarily a expensive bicycle. The answer is it is not possible to tell.


Student asked: Premise: "A young girl closes her eyes and releases her hands as she enjoys the swing set."
Hypothesis: "A young girl closes her eyes and is expelled from  a swing set."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response:
Let's think. One cannot enjoy the swing set if one is expelled from it. The answer is no.