An (economy car) may double as a go-kart.Logical formLearned from68 sentences. Production may double.Logical formLearned from68 sentences. A world-city may double a lead.Logical formLearned from67 sentences. A (trade surplus) may double.Logical formLearned from67 sentences. An income may double.Logical formLearned from66 sentences. Net income may double.Logical formLearned from64 sentences. A number of cases may double.Logical formLearned from64 sentences. Attendance may double.Logical formLearned from64 sentences. Exports may double.Logical formLearned from64 sentences. Demand may double.Logical formLearned from62 sentences. A number of persons may be doubled.Logical formLearned from62 sentences. A number may double in some years.Logical formLearned from62 sentences. A (share price) may double.Logical formLearned from62 sentences. Costs may double.Logical formLearned from61 sentences. A number of women may double.Logical formLearned from61 sentences.