A person may sign_up with a form.Logical formLearned from5 sentences. Volunteers may sign_up as editors.Logical formLearned from5 sentences. A person may sign_up for (security purposes).Logical formLearned from5 sentences. A person may sign_up on a website.Logical formLearned from5 sentences. A person may sign_up for paypal.Logical formLearned from5 sentences. A female may sign_up for a trip.Logical formLearned from5 sentences. A person may sign_up for a (fan club).Logical formLearned from5 sentences. Consumers may sign_up for a service.Logical formLearned from5 sentences. Persons may sign_up for (food stamps).Logical formLearned from5 sentences. A person may be sign_uped for a plan.Logical formLearned from5 sentences. A group may sign_up tens of thousands of voters.Logical formLearned from5 sentences. A person may sign_up for a stint.Logical formLearned from5 sentences. Persons may sign_up for a benefit.Logical formLearned from5 sentences. A male may sign_up some clients.Logical formLearned from5 sentences. A person may sign_up for a (cell phone).Logical formLearned from5 sentences.