Premise & hypothesis.
A man and woman laze around on the couch.

Two goldfish are riding bikes in a giant pile of mashed potatoes.
++++++++++
true or not.
no

Premise & hypothesis.
A crowd is gathered near a riverbank.

The people wait for the race on the river to start between the neighboring colleges.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A child gets dental care from a dentist as the another health professional holds his hand.

A scared child holds the hand of a health professional while getting a cavity filled a the dentist.
++++++++++
true or not.
it is not possible to tell