A person may have some stairs.Logical formLearned from4 sentences. Stairs may go to a floor.Logical formLearned from4 sentences. Stairs may be curved.Logical formLearned from4 sentences. Stairs may pertain-to a cabin.Logical formLearned from4 sentences. Stairs may pertain-to a library.Logical formLearned from4 sentences. Stairs can be crude.Logical formLearned from4 sentences. A male may stride_up stairs.Logical formLearned from4 sentences. (Hardwood stairs) may lead_up to a floor.Logical formLearned from4 sentences. Stairs can be to an attic.Logical formLearned from4 sentences. A female may stop at stairs.Logical formLearned from4 sentences. A portion may pertain-to stairs.Logical formLearned from4 sentences. Stairs may take persons.Logical formLearned from4 sentences. Stairs may install signs.Logical formLearned from4 sentences. A male may build stairs.Logical formLearned from4 sentences. A woman can be on stairs.Logical formLearned from4 sentences.