Student asked: Premise: "A man in shorts is using a barbecue grill in a yard."
Hypothesis: "It is summer."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. Using a barbecue grill does not necessarily mean it is summer. The answer is it is not possible to tell.


Student asked: Premise: "Two young women playing around with a animal toy together."
Hypothesis: "The twin sisters play with their birthday gift."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. Two women playing together need not be twin sisters. People can play with an animal toy even if the toy isn't a birthday gift. The answer is it is not possible to tell.


Student asked: Can we conclude from "A professor in a black blazer is writer on a chalkboard." that "There is a professor."?
Options:
- yes
- no
- it is not possible to tell
Teacher's response: Let's think. A professor in a black blazer is the same as a professor. The answer is yes.


Student asked: Given the sentence "A maritime worker carries a rope from a large ship." can we conclude that "A dockman ties a large ship with a rope."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response:
Let's think. A maritime worker isn't necessarily a dockman. Carrying the rope isn't the same as tying it. The answer is it is not possible to tell.