To be in something is the same as to be wearing it.
The question and answer are below.
Premise: "Three men in horned helmets are standing beside each other."
Hypothesis: "Three men are wearing helmets."
Do we know that the hypothesis entailed by the premise?
yes

Sentence one is just a more detailed description of the family relaxing.
The question and answer are below.
Premise: "The family is relaxing in lawn chairs and having beverages."
Hypothesis: "The family is relaxing."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
yes

Two children playing inside in the same place implies they are playing together.
The question and answer are below.
Given the sentence "Two children are playing or dancing inside." can we conclude that "The children play together."?
Options:
- yes
- it is not possible to tell
- no
yes