A person may participate in discussion.Logical formLearned from15 sentences. Countries may participate in negotiations.Logical formLearned from15 sentences. Students may participate in (exchange programs).Logical formLearned from15 sentences. Students may participate in a (service activity).Logical formLearned from15 sentences. Agents may participate in a raid.Logical formLearned from15 sentences. A US-president may participate in a town.Logical formLearned from15 sentences. Persons may participate in negotiations.Logical formLearned from15 sentences. A country may participate in (quota agreements).Logical formLearned from15 sentences. (Oil companies) may participate in a reconstruction of an (oil infrastructure).Logical formLearned from15 sentences. A group may participate in elections.Logical formLearned from15 sentences. A country may participate in a first wave of assaults.Logical formLearned from15 sentences. Politicians may participate in talks.Logical formLearned from15 sentences. Some officers may participate.Logical formLearned from15 sentences. Some countries may participate in a (space station effort).Logical formLearned from15 sentences. Some political parties may participate in elections.Logical formLearned from15 sentences.