         Sentence 1: Police soid they believe’ Cruz knew of the  Birl'through one_of her former’ schoolmates = though,  nejther the girt nov hér fomily kriew him .    Sentence 2; Police said on Monday they believed. Cruz  Knew:.of the fourth-gfade gid through one of her:  fotmer schoolmates:, although neither the gir nor her  famnily knew him