A tone can be firm.Logical formLearned from520 sentences. A tone can be optimistic.Logical formLearned from519 sentences. Tones can be warm.Logical formLearned from502 sentences. A person may pay for a (ring tone).Logical formLearned from498 sentences. A tone can be cautious.Logical formLearned from495 sentences. A tone can be angry.Logical formLearned from494 sentences. A tone can be somber.Logical formLearned from492 sentences. A tone can be aggressive.Logical formLearned from488 sentences. A tone can be warm.Logical formLearned from482 sentences. A change can be in tone.Logical formLearned from476 sentences. A tone can be emotional.Logical formLearned from472 sentences. A tone can be friendly.Logical formLearned from460 sentences. Tones can be soft.Logical formLearned from440 sentences. Tones can be dark.Logical formLearned from421 sentences. A tone can be light.Logical formLearned from417 sentences.