Representative may sit_in on meetings.Logical formLearned from2 sentences. Students may sit_in on a class.Logical formLearned from2 sentences. (Pin students) may sit_in on weeks of a course.Logical formLearned from2 sentences. Students may sit_in with lawyers.Logical formLearned from2 sentences. A person may sit_in for some years.Logical formLearned from2 sentences. A student may sit_in on a course.Logical formLearned from2 sentences. Persons may sit_in on a meeting.Logical formLearned from2 sentences. A month may sit_in on a (national-security discussion).Logical formLearned from2 sentences. Agents may sit_in between a client.Logical formLearned from2 sentences. A person may sit_in for some hours.Logical formLearned from2 sentences. A female may sit_in on a session.Logical formLearned from2 sentences. A person may sit_in on seminars.Logical formLearned from2 sentences. A person may sit_in on lectures.Logical formLearned from2 sentences. A person may sit_in on a presentation.Logical formLearned from2 sentences. A man may sit_in on a conversation.Logical formLearned from2 sentences.