A (summer break) can be a phenomenon.Logical formLearned from10 sentences. Persons may face a phenomenon.Logical formLearned from10 sentences. A person may report a phenomenon.Logical formLearned from10 sentences. A word can be for a phenomenon.Logical formLearned from10 sentences. Ozone can be a phenomenon.Logical formLearned from10 sentences. A bacteriologist may observe a phenomenon.Logical formLearned from10 sentences. A rise of debts can be a phenomenon of some years.Logical formLearned from10 sentences. A terrorism may become a phenomenon.Logical formLearned from10 sentences. A geological phenomenon can be rare.Logical formLearned from10 sentences. Rejection of (skin grafts) can be a phenomenon.Logical formLearned from10 sentences. A phenomenon can be unseen.Logical formLearned from10 sentences. A phenomenon can be quirky.Logical formLearned from10 sentences. A documentary can be on a phenomenon.Logical formLearned from10 sentences. Persons may examine a phenomenon.Logical formLearned from10 sentences. Thanks can be to a phenomenon.Logical formLearned from10 sentences.