A woman may stand on stairs.Logical formLearned from3 sentences. Stairs may lead to a house.Logical formLearned from3 sentences. Some men may ascend stairs.Logical formLearned from3 sentences. A room can be at an end of stairs.Logical formLearned from3 sentences. A landing can be opposite to a stair.Logical formLearned from3 sentences. A stair may come_up from a hall.Logical formLearned from3 sentences. A step may be heard upon stairs.Logical formLearned from3 sentences. A female may meet a male on stairs.Logical formLearned from3 sentences. Some men may come_down stairs.Logical formLearned from3 sentences. Stairs may be ended.Logical formLearned from3 sentences. A female may come to a foot of stairs.Logical formLearned from3 sentences. A person may be received at a foot of stairs.Logical formLearned from3 sentences. A foot can be on stairs.Logical formLearned from3 sentences. Persons may get_down stairs.Logical formLearned from3 sentences. A boy may read on stairs.Logical formLearned from3 sentences.