Indexes can be negative.Logical formLearned from26 sentences. An index can be constituted-of-or-filled-with titles.Logical formLearned from26 sentences. (Stock index futures) may point to an opening.Logical formLearned from26 sentences. An index may open with a gain of some points.Logical formLearned from26 sentences. An (index difference) can be refractive.Logical formLearned from26 sentences. An index may contain some components.Logical formLearned from26 sentences. Indexes can be weighted.Logical formLearned from26 sentences. A tenth may pertain-to an index.Logical formLearned from26 sentences. An (equity index) may pertain-to a country.Logical formLearned from26 sentences. An index of some companies may rise some percent.Logical formLearned from26 sentences. A weighting may pertain-to an index.Logical formLearned from26 sentences. A (stock index) may perform in some sessions.Logical formLearned from26 sentences. An index may close with a loss of some percent.Logical formLearned from26 sentences. An index may measure changes.Logical formLearned from26 sentences. An index may remain negative.Logical formLearned from26 sentences.