25. A non-transitory computer-readable recording medium having recorded thereon a program for causing a computer to execute an analysis process of contrasting a first text set constituted by first texts and a second text set constituted by second texts corresponding to the first texts, the first texts and the second texts corresponding thereto being generated around a same event through mutually different generation processes, the program recorded on the recording medium includes a command for causing the computer to execute the steps of: (a) determining, with respect to a homogeneous segment that is similar to a plurality of segments constituting a first text which is set as an analysis target and that is included in another first text, whether a content thereof is included in the second texts; and (b) determining, based on a result of the determination in the (a) step, whether each segment constituting the first text which is set as the analysis target should be described in the second text corresponding to the first text which is set as the analysis target.
35. The non-transitory computer-readable recording medium according to claim 25 , causing the computer to execute the step of: (c) segmenting the first texts based on at least one of a sentence, a paragraph, a topic and a phase included therein, and setting the plurality of segments.