Talks may prove fruitless.Logical formLearned from16 sentences. An enterprise can be fruitless.Logical formLearned from15 sentences. Searches can be fruitless.Logical formLearned from15 sentences. A visit can be fruitless.Logical formLearned from15 sentences. Visits can be fruitless.Logical formLearned from15 sentences. Journeys can be fruitless.Logical formLearned from14 sentences. A hunt may prove fruitless.Logical formLearned from14 sentences. Efforts may remain fruitless.Logical formLearned from14 sentences. A litigation can be fruitless.Logical formLearned from13 sentences. Searches can be fruitless.Logical formLearned from13 sentences. An effort can be fruitless.Logical formLearned from13 sentences. Campaigns can be fruitless.Logical formLearned from13 sentences. An investigation can be fruitless.Logical formLearned from13 sentences. A game can be fruitless.Logical formLearned from13 sentences. Investigations can be fruitless.Logical formLearned from13 sentences.