A (bird cage) can be empty.Logical formLearned from15 sentences. A cage can be safe.Logical formLearned from15 sentences. A cage can be heavy-duty.Logical formLearned from15 sentences. Animals can be in cages.Logical formLearned from15 sentences. A cage can be big.Logical formLearned from15 sentences. A cage may pertain-to a dog.Logical formLearned from15 sentences. A (batting cage) may pertain-to a male.Logical formLearned from15 sentences. A cage may undergo a use.Logical formLearned from15 sentences. A cage may open.Logical formLearned from15 sentences. Cages can be constituted-of-or-filled-with chickens.Logical formLearned from15 sentences. A back may pertain-to cages.Logical formLearned from15 sentences. (Battery cages) can be barren.Logical formLearned from15 sentences. Confines may pertain-to a cage.Logical formLearned from15 sentences. A cage can be constituted-of-or-filled-with rats.Logical formLearned from15 sentences. A cage can be at a zoo.Logical formLearned from15 sentences.