QUESTION: Premise: "A welder dressed in a green jacket and wearing protective gloves and a welding helmet welds some metal."
Based on this premise, can we conclude that the hypothesis "A human welding." is true?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: Welder can only be a human and only human can be welding.
The answer is yes.

QUESTION: Can we conclude from "There is a white cow lying down on what appears to be a bridge with several young people standing nearby and a woman dressed in blue walking further down." that "The cow is readying to jump off the bridge to his doom."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: If one is lying down then one is not readying to jump.
The answer is no.

QUESTION: Premise: "A man builds an elaborate sand castle on the beach."
Based on this premise, can we conclude that the hypothesis "There is a building contest on the beach." is true?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly:
Not all sand castles are built as part of a contest.
The answer is it is not possible to tell.