A base may pertain-to a (stair case).Logical formLearned from2 sentences. (Ramp stairs) may pertain-to a person.Logical formLearned from2 sentences. A transport may accelerate_up a flight of stairs.Logical formLearned from2 sentences. Stairs can be attached.Logical formLearned from2 sentences. Connection can be to stairs.Logical formLearned from2 sentences. A stair can be from a courtyard.Logical formLearned from2 sentences. Stairs can be located.Logical formLearned from2 sentences. A pass may be knowned as stair of grief.Logical formLearned from2 sentences. A (stair dance) may pertain-to a male.Logical formLearned from2 sentences. Stairs may lead to a cellar.Logical formLearned from2 sentences. Stairs may lead_up to a terrace.Logical formLearned from2 sentences. An (island platform) may be reached by stairs.Logical formLearned from2 sentences. A clock may come_down stairs.Logical formLearned from2 sentences. Stairs can be at a place.Logical formLearned from2 sentences. A (street stair) may lead to a corner of avenues.Logical formLearned from2 sentences.