"Well, yes." That much seemed obvious, but he was counting on his British intonation to keep Adam from knowing that Pete was confused by his confusion. "One from each house. Teams of four, all mixed up so your American sensibilities can be satisfied. But Gryffindors and Slytherins tend to have some rather, um, vocal rivalries. So I thought it might be easier to pair them up and work in the Hufflepuffs and then the Ravenclaws."