Get sentiment reports (v4)

Read a campaign's sentiment report: positive and negative sentiment themes about the brand and its competitors, with mention share and net sentiment, over the campaign's results window (scope.window): every value as of the window's as-of day, averaged over the conversations dated in the 30 days ending it, every trend one point per day (null for a day whose window holds no conversation the value counts), and every change the value minus its value 30 days before the as-of day (null without one). Each polarity lists its 25 most mentioned phrases, and positivePhraseTotalCount and negativePhraseTotalCount say how many there are.