Premise: A woman tennis player stands at center court as photographers take her picture.

Hypothesis: She is smiling.
it is not possible to tell

Premise: A little boy with brown curly hair is blowing bubbles with a wand held by a girl.

Hypothesis: boy and girl play
yes

Premise: the group of people in the river are using canoes are using their boating skills.

Hypothesis: The river is frozen.
no

Premise: A man in black approaches a strange silver object containing a person, while many onlookers observe from behind a roped off barrier.

Hypothesis: A man is approaching an aircraft.
it is not possible to tell