Question: Based on the sentence "A group of people ride a sailboat on a river.", is the sentence "People are on vacation at the river." true?
Answer:
it is not possible to tell

Question: Based on the sentence "A woman in a white sweater covers her mouth at the dinner table in someone's home.", is the sentence "The woman has her mouth covered while she is among company." true?
Answer:
yes

Question: Based on the sentence "A kid tries to do a skateboard trick over his friend who is sprawled out on the ground.", is the sentence "Nobody has a skateboard." true?
Answer:
no

Question: Based on the sentence "Group of people sit on the sidewalk to take photographs together.", is the sentence "There are people in a photography class." true?
Answer:
it is not possible to tell