R & A: Investigating an internal problem on the tractor is a type of work. Working on a tractor implies investigating on it.
yes
Q: Premise: "A man is investigating an internal problem within his tractor."
Hypothesis: "There is a man working on his tractor."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no

R & A: A man in a black wife-beater shirt and sweatpants looks very different that a man in brightly colored shorts and shirt.
no
Q: Given the sentence "A muscular man in a black wife-beater and sweatpants is smoking a cigarette and giving a stern look." is it true that "The man looks very cheerful in his brightly colored shorts and shirt."?

R & A: A man with his bike amid a demolished building does not imply he surveys the remains of a bombed library.
it is not possible to tell
Q: Premise: "A man with his bike amid a demolished building."
Hypothesis: "A cyclist surveys the remains of a bombed library."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no

R & A: Wearing a red shirt is a way of rephrasing in a red shirt.
yes
Q:
If "A guy in a red shirt and shorts wearing a bandanna riding a bicycle." does that mean that "A guy is wearing a red shirt."?
Options:
- yes
- it is not possible to tell
- no