(Stock index futures) may close.Logical formLearned from123 sentences. An index may begin.Logical formLearned from123 sentences. A (stock index) may drop some percent to some points.Logical formLearned from122 sentences. Changes can be in an index.Logical formLearned from122 sentences. An index can be changed.Logical formLearned from122 sentences. An index may decline some points.Logical formLearned from122 sentences. A (state index) may advance some percent.Logical formLearned from122 sentences. An index may be included.Logical formLearned from122 sentences. An index may trade.Logical formLearned from122 sentences. A (100-share index) may pertain-to a world-city.Logical formLearned from122 sentences. A (core rate) may pertain-to a (producer price index).Logical formLearned from122 sentences. An index may add some points to some points.Logical formLearned from121 sentences. Part may pertain-to an index.Logical formLearned from121 sentences. An index can be based.Logical formLearned from121 sentences. An index may pertain-to a government.Logical formLearned from120 sentences.