Q: If "This lady is having her picture taken as she does two thumbs up." does that mean that "A man shakes his fist at the camera."?
Options:
- yes
- it is not possible to tell
- no
A: A lady is not a man. One cannot be holding two thumbs up with a closed fist.
The answer is no.

QUESTION: Given the sentence "Three men with reflectors on their clothing are searching in the field." can we conclude that "A few men are outdoors."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: If three men are searching in a field then they are outdoors.
The answer is yes.

[QUESTION] Premise: "A man wearing white sits on a wooden bench against a white wall."
Hypothesis: "The man is standing."
Do we know that the hypothesis entailed by the premise?
One cannot be standing while he sits at the same time.
The answer is no.

Q: Can we conclude from "A man on a bike executes a jump as part of a competition while the crowd watches." that "A man is sitting on an exercise bike in the gym."?
Options:
- yes
- no
- it is not possible to tell
A: A man either executes a jump or is sitting on an exercise bike in the gym.
The answer is no.

QUESTION: Can we conclude from "Three people looking at items that a street vendor is selling." that "The people are looking at items."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: In order to look at items a street vendor is selling people must be looking at items.
The answer is yes.

QUESTION: Test for natural language inference.
Premise: "Two dogs tug at the same item while wearing training gear."
Hypothesis: "Dogs tugging for a competition."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly:
Dogs tug at items for fun. It isn't necessarily always a competition.
The answer is it is not possible to tell.