A struggle can be for survival.Logical formLearned from504 sentences. Survival can be improved.Logical formLearned from497 sentences. A fight can be for survival.Logical formLearned from490 sentences. A threat can be to survival.Logical formLearned from475 sentences. A key can be to survival.Logical formLearned from450 sentences. Chances can be constituted-of-or-filled-with survival.Logical formLearned from447 sentences. A battle can be for survival.Logical formLearned from435 sentences. Strategies can be for survival.Logical formLearned from434 sentences. A strategy can be for survival.Logical formLearned from433 sentences. Persons may undergo survival.Logical formLearned from416 sentences. A (survival rate) can be a percent.Logical formLearned from406 sentences. A means can be constituted-of-or-filled-with survival.Logical formLearned from395 sentences. Patients may undergo survival.Logical formLearned from379 sentences. Survival can be in the world.Logical formLearned from377 sentences. Survival can be at stake.Logical formLearned from365 sentences.