Student asked: If "A cyclist in a helmet is driving down a slope on his bike." does that mean that "A cyclist is riding his bike."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A cyclist in a helmet can only be riding his bike. The answer is yes.

Student asked: Given the sentence "A kangaroo wearing a yellow and black striped vest with the number eight on it is hopping." is it true that "A kangaroo is dressed up for a boxing competition."?
Teacher's response: Let's think. A kangaroo wearing a yellow and black vest does not imply being dressed up for a boxing competition. The answer is it is not possible to tell.

Student asked: Premise: "People are skiing down a snow covered mountain."
Hypothesis: "People are skiing down a snow covered mountain while on vacation at a ski resort."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. Not all people skiing down a snow covered mountain are on vacation. The answer is it is not possible to tell.

Student asked: Can we conclude from "Young man with a cigarette placing food on a paper plate." that "A young man is dancing in a ballet."?
Options:
- yes
- no
- it is not possible to tell
Teacher's response:
Let's think. A man placing food on a plate can not be dancing in a ballet. The answer is no.