Student asked: Premise: "A man in a black shirt is standing outside the museum campus with an excited expression on his face."
Based on this premise, can we conclude that the hypothesis "The excited man in black is outside the museum waiting for his friends." is true?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. The man can be waiting for people other than his friends. The answer is it is not possible to tell.

Student asked: If "There is a little boy in a red shirt and a dirty face and he is smiling." does that mean that "A child looks amused with a dirty face."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A child who is smiling does not necessarily imply that he looks amused. The answer is it is not possible to tell.

Student asked: Given the sentence "A man in glasses and jeans sitting on a doorstep." can we conclude that "The man had pajamas on."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. The man can not have pajamas on if hes in jeans. The answer is no.

Student asked: Given the sentence "Girl wearing hat and fur coat walks into dark room." can we conclude that "A movie star walks into the darkened auditorium."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response:
Let's think. Wearing hat and fur coat does not mean movie star and room does not mean audiorium. The answer is it is not possible to tell.