Student asked: Premise: "A man and boy runs on the shore."
Based on this premise, can we conclude that the hypothesis "The man and boy are swimming in the water." is true?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A man and a boy that runs on the shore cannot be swimming in the water the same time. The answer is no.

Student asked: Premise: "Young asian boy practices his calligraphy in front of classmates."
Hypothesis: "The young asian boy is at lunch."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. The Asian boy practicing calligraphy in front of classmates does not have to be at lunch. The answer is no.

Student asked: Premise: "Child with a green apple in his mouth is wearing a red life jacket."
Hypothesis: "The child is wearing a life jacket."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. The child wearing a life jacket is wearing a life jacket. The answer is yes.

Student asked: Premise: "There is a young girl on her cellphone while skating."
Based on this premise, can we conclude that the hypothesis "The girl is talking on the phone." is true?
Options:
- yes
- it is not possible to tell
- no
Teacher's response:
Let's think. On her cellphone does not necessarily mean talking on the phone. The answer is it is not possible to tell.