(Air ducts) can be dirty.Logical formLearned from10 sentences. Edges can be dirty.Logical formLearned from10 sentences. A yard can be dirty.Logical formLearned from10 sentences. A region can be dirty.Logical formLearned from10 sentences. Samples can be dirty.Logical formLearned from10 sentences. Locks can be dirty.Logical formLearned from10 sentences. A glass can be constituted-of-or-filled-with dirty water.Logical formLearned from10 sentences. A white trash can be dirty.Logical formLearned from10 sentences. An individual can be dirty.Logical formLearned from10 sentences. A prostitute can be dirty.Logical formLearned from10 sentences. A (dancing alum) can be dirty.Logical formLearned from10 sentences. A contest can be dirty.Logical formLearned from10 sentences. A (kitchen sink) can be dirty.Logical formLearned from10 sentences. Boxes can be dirty.Logical formLearned from10 sentences. Corridors can be dirty.Logical formLearned from10 sentences.