Consider the question. Test for natural language inference.
Premise: "A man in a blue shirt is looking at rocks and trees."
Hypothesis: "A man in a blue shirt is studying rocks and trees for his biology class."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
 If the answer is 'it is not possible to tell'; explain the reasoning:
Biology class is only one reason someone might look at rocks and trees.