[Q] Given the sentence "An elderly man is smiling at the camera while working in a wood shop." is it true that "An old man smiles while working in a wood shop."?
[A] Elderly means old. Is smiling and smiles are the same thing.
The answer is yes.

[Q] Test for natural language inference.
Premise: "Three people are digging in a desolate suburban desert environment while several others work around the house and cacti in the background."
Hypothesis: "A group of construction workers is building a new housing development in nevada."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
[A] Three people are digging in a desolate suburban desert environment while several others work around the house and cacti in the background does not necessary that a group of construction workers is building a new housing development in Nevada.
The answer is it is not possible to tell.

[Q] Can we conclude from "Young people in yellow shirts prepare colorful food." that "Young adults are preparing fruit trays."?
Options:
- yes
- no
- it is not possible to tell
[A] The people couldn't prepare fruit trays if they are preparing colorful food.
The answer is it is not possible to tell.