A spot can be hollow.Logical formLearned from57 sentences. An ache can be hollow.Logical formLearned from56 sentences. A hole can be hollow.Logical formLearned from55 sentences. Laughter can be hollow.Logical formLearned from55 sentences. A box can be hollow.Logical formLearned from53 sentences. A ware can be hollow.Logical formLearned from52 sentences. An exercise can be hollow.Logical formLearned from52 sentences. Places can be hollow.Logical formLearned from51 sentences. A head can be hollow.Logical formLearned from50 sentences. Persons can be hollow.Logical formLearned from50 sentences. Needles can be hollow.Logical formLearned from48 sentences. A base can be hollow.Logical formLearned from47 sentences. Bricks can be hollow.Logical formLearned from47 sentences. A pipe can be hollow.Logical formLearned from46 sentences. Charges of aggression may ring hollow.Logical formLearned from46 sentences.