1. A device for generating opinion pairs having sentiment orientation based impact relations, comprising: a reception unit which receives a plurality of object-oriented opinions; an extraction unit which extracts object-oriented opinions having impact relations among the plurality of object-oriented opinions; an analysis unit which analyzes sentiment orientations of the object-oriented opinions having impact relations which are extracted; and a generation unit which establishes correlations between the object-oriented opinions having impact relations which are based on the sentiment orientation, wherein the opinion pairs having sentiment orientation based impact relations are generated.