Premise & hypothesis.
A rhythmic gymnast in a blue and pink outfit performs a ribbon routine.

A gymnast is performing.
++++++++++
true or not.
yes

Premise & hypothesis.
A teenage boy is jumping off the side of a building with his skateboard about five feet in the air.

The boy is about 2 feet in the air.
++++++++++
true or not.
no

Premise & hypothesis.
A boy in a blue and white tie dye t-shirt is skateboarding on the railing of a building.

The boy's jeans were the same color as the blue on his shirt.
++++++++++
true or not.
it is not possible to tell