(World leaders) may attend a summit.Logical formLearned from83 sentences. Significance may pertain-to a summit.Logical formLearned from83 sentences. A summit can be daylong.Logical formLearned from83 sentences. A summit can be in a us-state.Logical formLearned from83 sentences. A centerpiece may pertain-to a summit.Logical formLearned from83 sentences. A (security summit) can be asian.Logical formLearned from83 sentences. A summit can be between some leaders.Logical formLearned from83 sentences. A (summit meeting) can be informal.Logical formLearned from82 sentences. An objective may pertain-to a summit.Logical formLearned from82 sentences. Access can be to a summit.Logical formLearned from82 sentences. A context may pertain-to a summit.Logical formLearned from82 sentences. Delegates can be at a summit.Logical formLearned from82 sentences. A president may attend a summit.Logical formLearned from82 sentences. Conjunction can be with a summit.Logical formLearned from82 sentences. A summit can be constituted-of-or-filled-with presidents.Logical formLearned from82 sentences.