Packs can be empty.Logical formLearned from39 sentences. An airport can be empty.Logical formLearned from39 sentences. Hell can be empty.Logical formLearned from39 sentences. A path can be empty.Logical formLearned from39 sentences. A roll can be empty.Logical formLearned from39 sentences. An ache can be empty.Logical formLearned from39 sentences. Wrappers can be empty.Logical formLearned from39 sentences. A (condom packet) can be empty.Logical formLearned from39 sentences. A cube can be empty.Logical formLearned from39 sentences. Gaps can be empty.Logical formLearned from39 sentences. An (elevator shaft) can be empty.Logical formLearned from39 sentences. A garage can be empty.Logical formLearned from39 sentences. A night can be empty.Logical formLearned from39 sentences. A bluster can be empty.Logical formLearned from39 sentences. A lane can be empty.Logical formLearned from39 sentences.