Among a group of 6 children, 2 belong to a football team. Philip says it is Roger and Qayla. Qayla says it is Philip and Roger. Roger says it is Qayla and Sam. Sam says it is Trista and Roger. Trista says it is Ursula and Sam. Ursula refuses to say anything. Four of the children correctly named one person and lied about the other. One person lied about both. The sixth person, Ursula, said nothing.