(Fuel trucks) can be empty.Logical formLearned from11 sentences. (Oxygen tanks) can be empty.Logical formLearned from11 sentences. A male may tap into an empty net.Logical formLearned from11 sentences. Shacks can be empty.Logical formLearned from11 sentences. Streets can be empty of soldiers.Logical formLearned from11 sentences. Bullets can be empty.Logical formLearned from11 sentences. (Bronze chairs) can be empty.Logical formLearned from11 sentences. Mail can be empty.Logical formLearned from11 sentences. Some shops can be empty.Logical formLearned from11 sentences. A runway can be empty.Logical formLearned from11 sentences. Tents can be empty.Logical formLearned from11 sentences. Streets can be empty of tourists.Logical formLearned from11 sentences. (Life jackets) can be empty.Logical formLearned from11 sentences. Pocketbooks can be empty.Logical formLearned from11 sentences. (Bird cages) can be empty.Logical formLearned from11 sentences.