QUESTION: If "A biker performs a trick in the air." does that mean that "A biker is sitting still."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: The biker cannot be sitting wile he performs a trick in the air.
The answer is no.

[QUESTION] Can we conclude from "A small boy is building with some wooden blocks." that "A boy is building something."?
Options:
- yes
- no
- it is not possible to tell
Building with some wooden blocks is a way of building something.
The answer is yes.

Q: Premise: "Two people sitting on a tree stump in front of a pond."
Hypothesis: "People sitting outside by a pond."
Do we know that the hypothesis entailed by the premise?
A: Sitting in front of a pond is a way of sitting by a pond and a pond is outside so if people are sitting by a pond then they are sitting outside.
The answer is yes.

QUESTION: Given the sentence "A large group of people are walking for a cause." is it true that "A group of children walks."?

Let's solve it slowly: A group of people does not imply a group of children.
The answer is it is not possible to tell.

[QUESTION] Premise: "A dog jumping in the air to retrieve a stick from a man."
Hypothesis: "The dog lazily walks through the park."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
A lazily walking dog would not exert the effort needed to be jumping in the air.
The answer is no.

Q: Given the sentence "A solitary woman uses a large primitive mortar and pestle to crush plant material as she stands in a stubble field." is it true that "A woman using a mortar and pestle in a field."?
A:
In order for the woman to use mortar and pestle she must be in a field.
The answer is yes.