An occasion may pertain-to a year.Logical formLearned from5 sentences. An occasion may pertain-to a move.Logical formLearned from5 sentences. Coordination can be on occasions.Logical formLearned from5 sentences. Activities may mark an occasion.Logical formLearned from5 sentences. Terrorists can be on some occasions.Logical formLearned from5 sentences. An occasion may pertain-to summits.Logical formLearned from5 sentences. An inscription can be for an occasion.Logical formLearned from5 sentences. An occasion can be for (family reunion).Logical formLearned from5 sentences. Some occasions can be during a night.Logical formLearned from5 sentences. A minister can be on an occasion.Logical formLearned from5 sentences. A visit to a world-city can be an occasion.Logical formLearned from5 sentences. Chinese leaders may exchange messages on an occasion of an anniversary of an establishment of diplomatic relations.Logical formLearned from5 sentences. A tour can be an occasion.Logical formLearned from5 sentences. Damage can be on some occasions.Logical formLearned from5 sentences. A country can be on occasions.Logical formLearned from5 sentences.