Premise: "A blond woman wearing glasses and a brown jacket is walking by wooden masks."
Hypothesis: "The woman has brown hair and a blond jacket."
Do we know that the hypothesis entailed by the premise?

no
Explanation: A blond woman with a brown jacket can't have brown hair and a blond jacket..

Premise: "Two women and a young man play a game around a table."
Hypothesis: "Some people are playing a game."
Do we know that the hypothesis entailed by the premise?

yes
Explanation: If they play a game around the table then that means they are playing a game..

Given the sentence "Asian males dressed in white and black are looking around." is it true that "The men are co-workers."?

it is not possible to tell
Explanation: Not all Asian males dressed in white and black are looking around are co-workers..

Premise: "A man is performing a trick high in the air with a bicycle."
Hypothesis: "The man is riding a bicycle."
Do we know that the hypothesis entailed by the premise?
yes
Explanation: The man is performing a trick with a bicycle so he must be riding a bicycle..