A complication can be rare.Logical formLearned from507 sentences. A distinction can be rare.Logical formLearned from504 sentences. An admission can be rare.Logical formLearned from501 sentences. A quality can be rare.Logical formLearned from496 sentences. Appearances can be rare.Logical formLearned from493 sentences. Situations can be rare.Logical formLearned from487 sentences. A honor can be rare.Logical formLearned from473 sentences. A species can be rare.Logical formLearned from462 sentences. Talks can be rare.Logical formLearned from460 sentences. A kind can be rare.Logical formLearned from452 sentences. A situation can be rare.Logical formLearned from438 sentences. A break can be rare.Logical formLearned from437 sentences. Tracks can be rare.Logical formLearned from434 sentences. An experience can be rare.Logical formLearned from434 sentences. An item can be rare.Logical formLearned from431 sentences.