Q: Can we conclude from "Construction worker is checking the condition of the bits on a boring machine." that "Construction worker at work."?
Options:
- yes
- no
- it is not possible to tell
A: The work of a construction worker includes checking the condition of a machine which is being used.
The answer is yes.

Q: Premise: "A young men jumps off rocks into a lake."
Hypothesis: "The man jumps into the lake."
Do we know that the hypothesis entailed by the premise?
A: It is common to find rocks beside a lake to jump off of and into the lake.
The answer is yes.

Q: Given the sentence "Two children with hula-hoops." is it true that "Children with a hula-hoop."?
A: The fact that two children with hula-hoops does not imply that children with a hula-hoop.
The answer is it is not possible to tell.

Q: Given the sentence "A man in a blue jersey watches something projected in front of him." is it true that "A man wearing blue watching something."?
A:
A man in a blue jersey means a man wearing blue.
The answer is yes.