A processor obtains a target knowledge graph that includes target nodes that represent concepts used within a target work and target edges between target nodes that represent links used within the target work to associate the concepts used therein with each other. The processor also obtains a background knowledge graph that includes background nodes that represent concepts used within a background work and background edges between background nodes that represent links used within the background work to associate the concepts used therein with each other. The processor compares a portion of the target knowledge graph to a portion of the background knowledge graph. Based on the comparison, the processor identifies a potential inconsistency between the background work and the target work.