An opposite may pertain-to a phenomenon.Logical formLearned from8 sentences. Droughts can be a phenomenon.Logical formLearned from8 sentences. A phenomenon may be knowned as a law.Logical formLearned from8 sentences. A phenomenon may undergo perceptions.Logical formLearned from8 sentences. A phenomenon may be created.Logical formLearned from8 sentences. A generality may pertain-to a phenomenon.Logical formLearned from8 sentences. A model may show a phenomenon.Logical formLearned from8 sentences. A phenomenon may repeat itself.Logical formLearned from8 sentences. A phenomenon can be invisible.Logical formLearned from8 sentences. A phenomenon can be old.Logical formLearned from8 sentences. A phenomenon can be irreversible.Logical formLearned from8 sentences. An epidemic can be a phenomenon.Logical formLearned from8 sentences. (Child labor) can be a phenomenon.Logical formLearned from8 sentences. A phenomenon may increase.Logical formLearned from8 sentences. A (placebo effect) can be a phenomenon.Logical formLearned from8 sentences.