A dolphin can be during an expedition.Logical formLearned from3 sentences. Searches can be for dolphins.Logical formLearned from3 sentences. Dolphins may be knowned as baiji.Logical formLearned from3 sentences. A (dolphin search) can be fruitless.Logical formLearned from3 sentences. Scientists may conclude a (dolphin search).Logical formLearned from3 sentences. A search can be for dolphins.Logical formLearned from3 sentences. Work can be on (freshwater dolphins).Logical formLearned from3 sentences. Dolphins may die in large numbers.Logical formLearned from3 sentences. Dolphins can be in seas.Logical formLearned from3 sentences. An environment can be for dolphins.Logical formLearned from3 sentences. Dolphins may survive long.Logical formLearned from3 sentences. A dolphin may rescue by fisherman.Logical formLearned from3 sentences. A recovery may pertain-to a dolphin.Logical formLearned from3 sentences. (White-flag dolphins) may pertain-to a river.Logical formLearned from3 sentences. A (finless dolphin) can be black.Logical formLearned from3 sentences.