Before revision: [ S’ what2 [S everyone3 [S e3 bought e2 for max] (Two possible interpretations: what did everyone collectively buy, versus individually buy) 2) Who bought everything for Max?
After revision: [ what2 [S everyone3 [S e3 bought e2 for max] (Two possible interpretations: what did everyone collectively buy, versus individually buy) 2) Who bought everything for Max?