Signs can be necessary.Logical formLearned from11 sentences. Monologues can be necessary.Logical formLearned from11 sentences. An event can be necessary.Logical formLearned from11 sentences. Political pressure can be necessary.Logical formLearned from11 sentences. Reasons can be necessary.Logical formLearned from11 sentences. A stop can be necessary.Logical formLearned from11 sentences. A (runoff election) can be necessary.Logical formLearned from11 sentences. A (government bailout) can be necessary.Logical formLearned from11 sentences. A (blood test) can be necessary.Logical formLearned from11 sentences. An illusion can be necessary.Logical formLearned from11 sentences. Gifts can be necessary.Logical formLearned from11 sentences. Tea can be necessary.Logical formLearned from11 sentences. Trial can be necessary.Logical formLearned from11 sentences. Examples can be necessary.Logical formLearned from11 sentences. Calls can be necessary.Logical formLearned from11 sentences.