What was the question for this implicit rationale, and corresponding answer?
People walking to fight breast cancer are not necessarily wearing pink shirts.
 The answer: it is not possible to tell
The question: Test for natural language inference.
Premise: "Many people walk to fight breast cancer."
Hypothesis: "A crowd of people are wearing pink shirts."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell