Read the following premise and answer if the hypothesis is true.
A woman in a sleeveless shirt grins in the direction of the man in the adjoining plush bus seat.
Hypothesis: The woman is flirting with the man.. Is the answer "Yes", "No", or "It's impossible to say"? Respond with only the answer and no additional text.
It's impossible to say
It's impossible to say. A grin can have various meanings, and flirting is just one possibility. Other possibilities include friendliness