A country may participate in a summit.Logical formLearned from6 sentences. Workers may participate in polls.Logical formLearned from6 sentences. Figures may participate.Logical formLearned from6 sentences. Persons may participate in a contest.Logical formLearned from5 sentences. Troops may participate in an operation.Logical formLearned from5 sentences. A country may participate in a (security summit).Logical formLearned from5 sentences. A rally may be participated by supporters.Logical formLearned from5 sentences. Experts may participate in a forum.Logical formLearned from5 sentences. Some cities may participate in a campaign.Logical formLearned from5 sentences. Serf-owners may participate in a rebellion.Logical formLearned from5 sentences. Students may participate in a survey.Logical formLearned from5 sentences. Al-qaida may participate.Logical formLearned from5 sentences. Representative of a government may participate in a dialogue.Logical formLearned from5 sentences. Students may participate in a game.Logical formLearned from5 sentences. Some economies may participate in a manner.Logical formLearned from5 sentences.