context: Well now that Zoe is a big girl we decided to give a sippy cup a try . There was just some water in it . I can happily report that the sippy cup did not leak , and Zoe enjoyed chewing on it . The amount of water she got from it was probably minimal and ultimately irrelevant .
question: Why did Zoe enjoy chewing on the sippy cup ?
reference: Because young children enjoy chewing on things .
candidate: because young children enjoy chewing things .