A male may slip on stairs.Logical formLearned from9 sentences. A height may pertain-to stairs.Logical formLearned from9 sentences. A series can be constituted-of-or-filled-with (stair steps).Logical formLearned from9 sentences. A male may come_down stairs.Logical formLearned from9 sentences. A top may pertain-to (stone stairs).Logical formLearned from9 sentences. A clock can be on stairs.Logical formLearned from9 sentences. Stairs can be crowded.Logical formLearned from9 sentences. A female may follow_up a male stairs.Logical formLearned from9 sentences. Stairs can be in a dark.Logical formLearned from9 sentences. Stairs may pertain-to a palace.Logical formLearned from9 sentences. Some bodies may be found on (subway stairs).Logical formLearned from9 sentences. Stairs can be cracked.Logical formLearned from9 sentences. Stairs can be without assistance.Logical formLearned from9 sentences. A homer may pertain-to stairs.Logical formLearned from9 sentences. Stairs may pertain-to a jet.Logical formLearned from9 sentences.