Consider the question. Premise: "The man in the yellow t-shirt is pulling a large grin on his face."
Hypothesis: "He is smiling at his yellow shirt."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
 If the answer is 'it is not possible to tell'; explain the reasoning:
The man is pulling a large grin doesn't mean that he's smiling at his shirt.