What was the question for this implicit rationale, and corresponding answer?
An elderly man looking at his phone is not necessarily preparing to make phone call.
 The answer: it is not possible to tell
The question: Can we conclude from "An elderly man wearing a black jacket and blue jeans is sitting on a bench while looking at his phone." that "A man sitting on a bench is preparing to make phone call."?
Options:
- yes
- no
- it is not possible to tell