Q: Test for natural language inference.
Premise: "Rail conductor in an olive train smiles for a photo."
Hypothesis: "The railroad conductor smiled and waved at the bystanders as the train left town."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: The train could be standing still and have no intention to leave town.
The answer is it is not possible to tell.

QUESTION: Can we conclude from "An older blond lady in a white shirt crosses the street." that "The older blond woman is crossing the street."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: A woman crossing the street is a restatement of lady wearing some specific clothes that also crosses the street.
The answer is yes.

[QUESTION] Can we conclude from "Some rock musicians are playing at a concert." that "A rock concert is happening."?
Options:
- yes
- no
- it is not possible to tell
If musicians are playing at a concert then a concert is happening.
The answer is yes.

Q: Given the sentence "A small child wearing a helmet sits on a bike with training wheels in front of a brick house surrounded by a brick wall and white entrance gate." can we conclude that "A girl is on her bike."?
Options:
- yes
- it is not possible to tell
- no
A: Just because the girl is sitting on a bike does not mean that the bike belongs to her.
The answer is it is not possible to tell.

QUESTION: Can we conclude from "A man stares at the sky as he smokes." that "A guy is smoking outside."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: A man is also called a guy. If he is staring at the sky he would be outside.
The answer is yes.

QUESTION: Given the sentence "A man driving a tractor pulls along two young children for a ride." is it true that "The man driving the tractor is the children's father."?

Let's solve it slowly:
A man pulling children in a tractor does not imply the man is the father.
The answer is it is not possible to tell.