Persons can be in (grade school).Logical formLearned from50 sentences. Exchange can be for grades.Logical formLearned from50 sentences. A drop can be in grades.Logical formLearned from50 sentences. A female may teach grade.Logical formLearned from50 sentences. A (letter grade) may pertain-to a person.Logical formLearned from50 sentences. A (grade point average) can be in sciences.Logical formLearned from50 sentences. A grade can be in school.Logical formLearned from50 sentences. An end may pertain-to an eighth grade.Logical formLearned from49 sentences. A person may teach sixth grade.Logical formLearned from49 sentences. A grade may be posted.Logical formLearned from49 sentences. A grade can be at a school.Logical formLearned from49 sentences. A grade can be a b.Logical formLearned from49 sentences. Grades may improve.Logical formLearned from49 sentences. A male may get grades.Logical formLearned from49 sentences. A male may receive grades.Logical formLearned from49 sentences.