Drivers may sleep some hours.Logical formLearned from6 sentences. Passengers may sleep on a (night flight).Logical formLearned from6 sentences. A female may sleep in a night.Logical formLearned from6 sentences. A spire can be on a side of sleeping a castle.Logical formLearned from6 sentences. Persons may sleep for some days.Logical formLearned from6 sentences. Clings to a vow may sleep.Logical formLearned from6 sentences. Some children may sleep in some room.Logical formLearned from6 sentences. Guests may sleep on a bed.Logical formLearned from6 sentences. Tigers may sleep.Logical formLearned from6 sentences. A young man may sleep in an aisle.Logical formLearned from6 sentences. A person may sleep on cots.Logical formLearned from6 sentences. A son may sleep on a floor.Logical formLearned from6 sentences. Directors may sleep with secretaries.Logical formLearned from6 sentences. A mother may sleep for some years.Logical formLearned from6 sentences. A woman may sleep in a van.Logical formLearned from6 sentences.