A male may walk_up stairs to an apartment.Logical formLearned from4 sentences. A female may steal_down stairs.Logical formLearned from4 sentences. A pantry can be under stairs.Logical formLearned from4 sentences. Stairs can be to an office.Logical formLearned from4 sentences. A fan can be constituted-of-or-filled-with stairs.Logical formLearned from4 sentences. Persons may fall_down stairs.Logical formLearned from4 sentences. A person may love stairs.Logical formLearned from4 sentences. Persons may find a set of stairs.Logical formLearned from4 sentences. Stairs can be in a lobby.Logical formLearned from4 sentences. Stairs may pertain-to a restaurant.Logical formLearned from4 sentences. Stairs may pertain-to a platform.Logical formLearned from4 sentences. A skylight can be in stairs.Logical formLearned from4 sentences. (Stair lifts) can be outdoor.Logical formLearned from4 sentences. A stair can be simple.Logical formLearned from4 sentences. A problem can be with stairs.Logical formLearned from4 sentences.