A threat may ring hollow.Logical formLearned from2 sentences. Assertions can be hollow.Logical formLearned from2 sentences. Doors can be hollow.Logical formLearned from2 sentences. Statuettes can be hollow.Logical formLearned from2 sentences. Mutual funds can be hollow.Logical formLearned from2 sentences. An addition can be hollow.Logical formLearned from2 sentences. A bed can be hollow.Logical formLearned from2 sentences. A spin can be hollow.Logical formLearned from2 sentences. Persons may ring hollow.Logical formLearned from2 sentences. Warnings may prove hollow.Logical formLearned from2 sentences. Crutches can be hollow.Logical formLearned from2 sentences. Claims of influence can be hollow.Logical formLearned from2 sentences. Bunnies can be hollow.Logical formLearned from2 sentences. Records may ring hollow.Logical formLearned from2 sentences. A victory may prove hollow.Logical formLearned from2 sentences.