Topics can be plain.Logical formLearned from9 sentences. An error can be plain.Logical formLearned from9 sentences. A plain meaning may pertain-to a law.Logical formLearned from9 sentences. Skin can be plain.Logical formLearned from9 sentences. Applications can be plain.Logical formLearned from9 sentences. A dinner can be plain.Logical formLearned from9 sentences. A sense can be plain.Logical formLearned from9 sentences. A cause can be plain.Logical formLearned from9 sentences. A mailbox can be plain.Logical formLearned from9 sentences. A mystery can be plain.Logical formLearned from9 sentences. A tv can be plain.Logical formLearned from9 sentences. A human can be plain.Logical formLearned from9 sentences. Rectangles can be plain.Logical formLearned from9 sentences. A yellow cake can be plain.Logical formLearned from9 sentences. A trash can be plain.Logical formLearned from9 sentences.