Premise: An in-line skater grinding on a rail.

Hypothesis: a skater is grinding on a rail.
yes

Premise: Several people are gathered on the steps in front of a brick building.

Hypothesis: People gathering on the steps of a building to hear a verdict.
it is not possible to tell

Premise: Two little kids are intrigued by some food at a market.

Hypothesis: Three little kids are intrigued by some food at a market.
no

Premise: A young man looking at the sky through a personal telescope in the evening.

Hypothesis: The young man with the telescope is loking for stars.
it is not possible to tell