Ties can be controversial.Logical formLearned from21 sentences. Decisions can be controversial.Logical formLearned from21 sentences. (Policy decisions) can be controversial.Logical formLearned from21 sentences. A best-seller can be controversial.Logical formLearned from21 sentences. A poster can be controversial.Logical formLearned from21 sentences. An (oil project) can be controversial.Logical formLearned from21 sentences. Hair can be controversial.Logical formLearned from21 sentences. A thesis can be controversial.Logical formLearned from21 sentences. A theology can be controversial.Logical formLearned from21 sentences. Effectiveness may remain controversial.Logical formLearned from21 sentences. A petition can be controversial.Logical formLearned from21 sentences. A cause can be controversial.Logical formLearned from21 sentences. A (trade deal) can be controversial.Logical formLearned from21 sentences. A museum can be controversial.Logical formLearned from21 sentences. Services can be controversial.Logical formLearned from21 sentences.