(Transmission lines) may undergo an erection.Logical formLearned from2 sentences. Roadblocks may undergo an erection.Logical formLearned from2 sentences. A (boundary mark) may undergo an erection.Logical formLearned from2 sentences. Mills may undergo an erection.Logical formLearned from2 sentences. Some patrons may support erection of a monument.Logical formLearned from2 sentences. A church can be in course of erection.Logical formLearned from2 sentences. A shelter may undergo an erection.Logical formLearned from2 sentences. Erection can be in a company.Logical formLearned from2 sentences. A British government may prevent an erection of a monument.Logical formLearned from2 sentences. A (cotton mill) may undergo an erection.Logical formLearned from2 sentences. A palisade may undergo an erection.Logical formLearned from2 sentences. An (iron tower) may undergo an erection.Logical formLearned from2 sentences. (Street signs) may undergo an erection.Logical formLearned from2 sentences. A ceiling may undergo an erection.Logical formLearned from2 sentences. A stove-house may undergo an erection.Logical formLearned from2 sentences.