Consider the question. Given the sentence "Firemen stand outside a burning building with lots of smoke." can we conclude that "The firemen realize someone is trapped inside the building."?
Options:
- yes
- it is not possible to tell
- no
 What is the step-by-step reasoning process to arrive at the answer: it is not possible to tell?
The firemen stand outside of a burning building but they don't necessarily realize someone is trapped in the building.