Some persons may sign_up for a conference.Logical formLearned from6 sentences. A company may sign_up to deals.Logical formLearned from6 sentences. Some refugees may sign_up for repatriation.Logical formLearned from6 sentences. Militant groups may sign_up to a truce.Logical formLearned from6 sentences. An international-political-entity may sign_up some countries.Logical formLearned from6 sentences. Persons may sign_up to a (truce agreement).Logical formLearned from6 sentences. A regime may sign_up to inspections of facilities.Logical formLearned from6 sentences. Some factions may sign_up to a moratorium.Logical formLearned from6 sentences. A country may sign_up to an (export cut).Logical formLearned from6 sentences. A father may sign_up a male.Logical formLearned from5 sentences. Some persons may sign_up for an event.Logical formLearned from5 sentences. A person may sign_up with an instructor.Logical formLearned from5 sentences. A person may sign_up for a listserv.Logical formLearned from5 sentences. A person may sign_up for deductions.Logical formLearned from5 sentences. A person may sign_up a book.Logical formLearned from5 sentences.