Student asked: Test for natural language inference.
Premise: "A clean-shaven man getting dressed in a purple shirt and tie in front of the mirror."
Hypothesis: "A man getting ready for work."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Teacher's response: Let's think. A man getting dressed in front of the mirror is not necessarily getting ready for work. The answer is it is not possible to tell.


Student asked: Premise: "Two policeman and are on motorcycles."
Hypothesis: "A cat eats food."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. Two policeman and a cat differ both in number and species in that a cat is an animal while men are human. Eating food and sitting on motorcycles cannot be regarded as being the same activity. The answer is no.


Student asked: Premise: "A city street is lined with parked motorcycles."
Hypothesis: "The motorcycles are all black."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. Just because the city streets is parked with motorcycles that does not mean they are all black. The answer is it is not possible to tell.


Student asked: Premise: "A guitarist performing for a young child."
Hypothesis: "A guitarist is performing."
Do we know that the hypothesis entailed by the premise?
Teacher's response:
Let's think. Performing for a young child can be simplified to just performing. The answer is yes.