Student asked: Premise: "People playing outside near a water fountain getting wet."
Hypothesis: "People standing near a water fountain to cool down from the hot day."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. People don't always cool down near fountains on a hot day. The answer is it is not possible to tell.


Student asked: Test for natural language inference.
Premise: "Several young people play on a sand dune."
Hypothesis: "They are trying to climb to the top of the dune."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Teacher's response: Let's think. People can play on the dune without trying to climb to the top. The answer is it is not possible to tell.


Student asked: Premise: "Three teenage boys sitting down talking and fixing their shoes."
Hypothesis: "A group of boys chat together."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. Teenage boys are boys between 13 and 19. Three teenage boys are a group of boys. The answer is yes.


Student asked: Given the sentence "A black dog in a grassy field fetching a colourful toy." is it true that "The dog has no mouth."?
Teacher's response:
Let's think. The dog has a mouth because it can fetch a colourful toy. The answer is no.