A ballpoint can be blue.Logical formLearned from17 sentences. A midnight can be blue.Logical formLearned from17 sentences. A lawn can be blue.Logical formLearned from17 sentences. Light-emitting diodes can be blue.Logical formLearned from17 sentences. (Index cards) can be blue.Logical formLearned from17 sentences. A light can be blue.Logical formLearned from17 sentences. (Box subsidies) can be blue.Logical formLearned from17 sentences. A territory can be blue.Logical formLearned from17 sentences. Blue eyes may open.Logical formLearned from17 sentences. A (strobe light) can be blue.Logical formLearned from17 sentences. A blue line can be dashed.Logical formLearned from17 sentences. A (police truck) can be blue.Logical formLearned from17 sentences. Ceilings can be blue.Logical formLearned from17 sentences. (Flight suits) can be blue.Logical formLearned from17 sentences. Goggles can be blue.Logical formLearned from17 sentences.