Student asked: Premise: "A man sitting at a piano singing."
Based on this premise, can we conclude that the hypothesis "A man using his vocal cords to produce sound in a harmonious way." is true?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. Singing is the act of an animal using vocal cords to produce sound in a harmonious way. The answer is yes.

Student asked: Premise: "A motorcycle is lying on the ground near a fire engine."
Hypothesis: "The fire engine races the motorcycle."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. The motorcycle cannot be both racing and lying on the ground at the same time. The answer is no.

Student asked: Given the sentence "A man in a dark suit stands waiting for a subway train while a man in a red shirt and jeans stands waiting on the opposite side of the tracks." is it true that "The men a standing next to subway tracks."?
Teacher's response: Let's think. Men standing on either side of subway tracks are each next to the tracks. The answer is yes.

Student asked: Can we conclude from "A man wearing a t-shirt and blue jeans is sitting outdoors underneath balloons." that "A man is wearing clothes outside."?
Options:
- yes
- no
- it is not possible to tell
Teacher's response:
Let's think. T-shirt and blue jeans are types of clothes. Outside is synonymous to outdoors. The answer is yes.