Relationships and descriptions are inferred for entities that appear in media content, such as movies and television programs. In one embodiment, media content is analyzed to infer relationships among entities that appear in the media content over an entirety of the media content. Relationships between two or more entities may change over time in the media content. A request is received from a client device for entity information regarding one or more entities relative to a particular time in the media content. Relationships that have been inferred via this analysis are then identified based at least in part on the particular time. The entity information presenting the identified relationships is sent to the client device.