A person may sign_up for a programme.Logical formLearned from4 sentences. A person may sign_up for a rss.Logical formLearned from4 sentences. A person may sign_up for newsletter.Logical formLearned from4 sentences. A sister may sign_up a female.Logical formLearned from4 sentences. A process can be for sign_upping.Logical formLearned from4 sentences. A person may be sign_uped to a host of (email databases).Logical formLearned from4 sentences. A person may sign_up with a host.Logical formLearned from4 sentences. A person may sign_up to a feed.Logical formLearned from4 sentences. A guy may sign_up a person.Logical formLearned from4 sentences. Some persons may sign_up as members.Logical formLearned from4 sentences. Some way may sign_up a person.Logical formLearned from4 sentences. A person may sign_up for a (waiting list).Logical formLearned from4 sentences. A person may sign_up for a half marathon.Logical formLearned from4 sentences. Enterprises may sign_up for a (licensing program).Logical formLearned from4 sentences. A person may sign_up a friend.Logical formLearned from4 sentences.