Student asked: Premise: "A man and his son on an interesting skateboard."
Based on this premise, can we conclude that the hypothesis "The people are riding a skateboard." is true?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A man and a son constitutes people. Being on a skateboard usually refers to riding it. The answer is yes.


Student asked: Can we conclude from "Woman in a scarf strolls along a sidewalk." that "A woman is going to the store."?
Options:
- yes
- no
- it is not possible to tell
Teacher's response: Let's think. Not all woman strolling along a sidewalk is going to the store. The answer is it is not possible to tell.


Student asked: Can we conclude from "Two people go ice skating in a rink." that "A man and woman go on a first date to the skating rink."?
Options:
- yes
- no
- it is not possible to tell
Teacher's response: Let's think. People does not imply man and woman and go ice skating does not imply it is a first date. The answer is it is not possible to tell.


Student asked: Given the sentence "A boy playing with a racquet." is it true that "A boy playing racquetball."?
Teacher's response:
Let's think. The boy may just be holding a racquet and not playing racquetball. He could be playing tennis. The answer is it is not possible to tell.