A productivity can be sustained.Logical formLearned from56 sentences. A gain can be in productivity.Logical formLearned from56 sentences. A gain can be in productivity.Logical formLearned from56 sentences. A key can be to productivity.Logical formLearned from55 sentences. A drain can be on productivity.Logical formLearned from55 sentences. Losses can be in productivity.Logical formLearned from55 sentences. Productivity may drop.Logical formLearned from54 sentences. Productivity can be in agriculture.Logical formLearned from53 sentences. A dynamo may be designed for productivity.Logical formLearned from52 sentences. A productivity may pertain-to a soil.Logical formLearned from51 sentences. (Product description) may be built for productivity.Logical formLearned from51 sentences. Increase can be in productivity.Logical formLearned from50 sentences. Rates can be constituted-of-or-filled-with productivity.Logical formLearned from50 sentences. A productivity can be advanced.Logical formLearned from49 sentences. A productivity can be sustainable.Logical formLearned from49 sentences.