QUESTION: Can we conclude from "A crowd goes wild at a concert while confetti rains down." that "The headliner is on stage."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: The crowd could go wild even it the headliner is not on stage. Some concerts are not performed on a stage.
The answer is it is not possible to tell.

QUESTION: If "A girl on a stationary bike posing in her bikini top and bottoms wearing fishnet stockings." does that mean that "A boy on a bike is doing tricks."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: Contrary pieces of information are the boy on a bike doing tricks as against the girl on a stationary bike only posing in her bikini.
The answer is no.

QUESTION: Can we conclude from "Three guys are barbecuing on a grill on a porch with a white fence." that "Neighbors are cooking for a neighborhood block party."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly:
Three guys barbecuing does not imply the men are neighbors or that they are grilling for a neighborhood block party.
The answer is it is not possible to tell.