Q: Given the sentence "A skateboarder uses a ramp." is it true that "A man is doing an impressive skateboard trick."?
A: All skateboarders aren't men and using a ramp doesn't mean the skateboarder is doing a skateboard trick.
The answer is it is not possible to tell.

Q: Given the sentence "A street lined with tents and people." is it true that "The street is lined with horses and stables."?
A: The street is either lined with tents and people or horses and stables.
The answer is no.

Q: Can we conclude from "A boy is swimming breaststroke at a swim meet." that "The boy is swimming."?
Options:
- yes
- no
- it is not possible to tell
A: When swimming there are varied strokes such as the breaststroke and the back float.
The answer is yes.

Q: Given the sentence "Several men working on a motorcycle." can we conclude that "Two motorcycles sit in the corner of a shop."?
Options:
- yes
- it is not possible to tell
- no
A:
Either several men are working on a motorcycle or two motorcycles are sitting in a shop.
The answer is no.