Premise: Two baseball players talk, one is sitting, the other is standing.

Hypothesis: A baseball player brags while another one sits and rolls his eyes.
it is not possible to tell

Premise: People with white lab coats looking into a microscope.

Hypothesis: People in lab coats are trying to discover a cure for a disease.
it is not possible to tell

Premise: A man using his broiling pan to barbecue some steaks.

Hypothesis: man grilling fish
no

Premise: Olympic swimmers leaving the starting block at the 2012 London Olympics.

Hypothesis: The swimmers dive in the water.
yes