Relationships can be empty.Logical formLearned from11 sentences. Blue can be empty.Logical formLearned from11 sentences. An event can be empty.Logical formLearned from11 sentences. A (train car) can be empty.Logical formLearned from11 sentences. Freeways can be empty.Logical formLearned from11 sentences. Self can be empty.Logical formLearned from11 sentences. Decades can be empty.Logical formLearned from11 sentences. A fear can be empty.Logical formLearned from11 sentences. (Speech bubbles) can be empty.Logical formLearned from11 sentences. Barriers can be empty.Logical formLearned from11 sentences. A status can be empty.Logical formLearned from11 sentences. A study can be empty.Logical formLearned from11 sentences. Ruins can be empty.Logical formLearned from11 sentences. A corner can be empty.Logical formLearned from11 sentences. An empty glass can be on a table.Logical formLearned from11 sentences.