A receptor can be necessary.Logical formLearned from12 sentences. (Purchase agreements) may be made necessary by ambiguities.Logical formLearned from12 sentences. Retreat can be necessary.Logical formLearned from12 sentences. Interest can be necessary.Logical formLearned from12 sentences. Troops can be necessary for victory.Logical formLearned from12 sentences. Appropriations can be necessary.Logical formLearned from12 sentences. Dreams can be necessary.Logical formLearned from12 sentences. Cars can be necessary.Logical formLearned from12 sentences. Submission can be necessary.Logical formLearned from12 sentences. A platform can be necessary for applications.Logical formLearned from12 sentences. A year can be necessary.Logical formLearned from12 sentences. A reform can be necessary.Logical formLearned from12 sentences. An opinion can be necessary.Logical formLearned from12 sentences. A medication can be necessary.Logical formLearned from12 sentences. A shield can be necessary.Logical formLearned from12 sentences.