Question: How many universities does the conference, in which the Middlebury Panthers are included, consist of?
Sentence (from "Middlebury Panthers"): Middlebury enjoys national success in soccer, tennis, cross country running, lacrosse, swimming and diving, ice hockey, field hockey, and skiing, and fields 31 varsity NCAA teams and several competitive club teams including a sailing team (MCSC), a crew team, a water polo team, and a rugby team.
Relevant evidence: No