Question and answer: Q: Given the sentence "A stream of men wearing old century viking costumes and armor are marching along a walkway with stone buildings in the background." is it true that "Some men in costumes are heading to a viking larp meetup."?
A: it is not possible to tell
Explanation: A stream of men wearing old century viking costumes and armor are not necessarily heading to a viking LARP meetup.

Question and answer: Q: Premise: "Workers use large machinery at a work site."
Based on this premise, can we conclude that the hypothesis "Workers use large machinery at work site to build a house." is true?
Options:
- yes
- it is not possible to tell
- no
A: it is not possible to tell
Explanation: Machinery can be used for other things than to build a house.

Question and answer: Q: Test for natural language inference.
Premise: "A woman sitting next to what looks like a giant bathtub."
Hypothesis: "A woman is sitting in a bathroom next to a bathtub."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: it is not possible to tell
Explanation:
A woman sitting next to what looks like a giant bathtub is not necessarily in a bathroom.