There are five people in a room; to help keep things simple I'll label them Person A,B,C,D,and E. Both A and B have never met before but are friends to Person D's cousin, Person D is semi-acquainted with Person B and best friends with Person C, Person C hates Person A because he use to pick on him when he was in grade-school. Person E has had a crush on Person B since they first met as children. Having established that; What is the airspeed velocity of an unladen swallow?