1. An information processing apparatus comprising: an image analysis unit to analyze image data; and a protagonist identification unit to identify a protagonist of an event including at least one set of image data, wherein the protagonist identification unit identifies the protagonist of the event by using at least a parameter independent of an analysis of an image provided to the event, and wherein, if the protagonist of the event is not able to be identified by using the parameter independent of the analysis of the image, the information processing apparatus makes the image analysis unit analyze the image data included in the event to identify the protagonist of the event.