Leo: Premise: "A emergency were paramedics and the fire department were called in to help."
Hypothesis: "No one responded to the 911 call."
Do we know that the hypothesis entailed by the premise?
Mei: OK, So, let's think first...
Me:
If no one responded on the 911 call then the paramedics and the fire department were not called in to help.
Thus, the answer is no.