A report can be hollow.Logical formLearned from6 sentences. An agreement can be hollow.Logical formLearned from6 sentences. A post can be hollow.Logical formLearned from6 sentences. Legs can be hollow.Logical formLearned from6 sentences. Times can be hollow.Logical formLearned from6 sentences. A facade can be hollow.Logical formLearned from6 sentences. A (tube test) can be hollow.Logical formLearned from6 sentences. Objects can be hollow.Logical formLearned from6 sentences. Icons can be hollow.Logical formLearned from6 sentences. Centres can be hollow.Logical formLearned from6 sentences. A catheter can be hollow.Logical formLearned from6 sentences. (Earth theories) can be hollow.Logical formLearned from6 sentences. Depths can be hollow.Logical formLearned from6 sentences. A hollow body may pertain-to a guitar.Logical formLearned from6 sentences. Depth can be hollow.Logical formLearned from6 sentences.