A male may sign copies of a book.Logical formLearned from73 sentences. A male may sign an extension.Logical formLearned from73 sentences. A contract may be signed on a month.Logical formLearned from73 sentences. A male may sign with a company.Logical formLearned from72 sentences. A male may sign a card.Logical formLearned from72 sentences. A person may sign a pledge.Logical formLearned from72 sentences. A person may sign.Logical formLearned from72 sentences. A male may sign himself.Logical formLearned from72 sentences. A government may sign a (ceasefire agreement).Logical formLearned from72 sentences. A president may sign an agreement.Logical formLearned from72 sentences. A person may sign a law.Logical formLearned from72 sentences. A treaty may be signed in a world-city.Logical formLearned from71 sentences. A president may sign a proclamation.Logical formLearned from71 sentences. A station may sign on a month.Logical formLearned from71 sentences. A male may sign a memorandum of understanding.Logical formLearned from71 sentences.