Example systems and methods of extracting and processing data are described. In one implementation, a method accesses genealogy data (which includes a root node) associated with multiple data sources. The genealogy data is expanded from the root node. The method identifies data objects associated with the genealogy data and identifies a simplification rule to apply to the genealogy data. Data objects in the genealogy data that satisfy the simplification rule are identified by the method. A simplified representation of the genealogy data is generated by replacing each identified data object with a link to a predecessor data object.