Teeth can be hollow.Logical formLearned from15 sentences. An egg can be hollow.Logical formLearned from15 sentences. An offer can be hollow.Logical formLearned from15 sentences. An axle can be hollow.Logical formLearned from14 sentences. A sculpture can be hollow.Logical formLearned from14 sentences. A statue can be hollow.Logical formLearned from14 sentences. Solutions can be hollow.Logical formLearned from14 sentences. A (ground edge) can be hollow.Logical formLearned from14 sentences. Gourds can be hollow.Logical formLearned from14 sentences. A camp can be hollow.Logical formLearned from14 sentences. A night can be hollow.Logical formLearned from14 sentences. A snoot can be hollow.Logical formLearned from14 sentences. A spine can be hollow.Logical formLearned from14 sentences. Hollow man can be constituted-of-or-filled-with straw.Logical formLearned from14 sentences. A kind can be hollow.Logical formLearned from14 sentences.