A fireman is in an open building, therefore a fireman is in the bottom of an open building. A fireman is being hoisted, so we can ASSUME that he is working and therefore being helpful, but we don't know for sure.


Context: Fireman in the bottom of an open building, one is being hoisted down a rope.
Hypothesis: Fireman in an open building being helpful

Given this context, determine if the hypothesis is true (Yes, no, or unknown)?