There is a system for selecting a text for output from among multiple texts according to whether or not a phrase is included in the multiple texts. The system includes a determination unit that determines whether or not each of predetermined multiple phrases is included in each of the multiple texts; an index calculation unit that, with respect to each of the multiple phrases, calculates a larger index for a text having the highest of priorities preset among texts including the phrase, then indexes for other texts; and an output unit that selects texts each having a larger sum of sums of the calculated index for each text and outputs a group of the selected texts.