10. The device of claim 9 , wherein the pedigree comprises a pedigree of the primary resource.
9. A device comprising: a processor; an interface that receives a request to assemble a pedigree of a primary resource, wherein the pedigree of the primary resource includes a set of statements that describe relationships between the primary resource and other resources from which an asserted fact of the primary resource was derived; a first-stage query module executing on the processor that submits to a set of one or more pedigree management servers a first query for pedigree fragments that include one or more statements that specify direct relationships between the primary resource and a first set of the resources, wherein the direct relationships indicate that the asserted fact of the primary resource was derived from data of the first set of the resources; wherein the interface receives, in response to the query, a first set of pedigree fragments , each of which includes one or more of the statements that specify the direct relationships between the primary resource and the first set of resources; and a second-stage query module executing on the processor that queries the first set of pedigree fragments to identify statements that describe direct relationships between the primary resource and a second set of the resources, wherein the first-stage query module is configured to submit a second query to the pedigree management servers to obtain a second set of pedigree fragments that include one or more statements that specify direct relationships for the second set of resources, wherein the direct relationships of the second set of pedigree fragments refer to the second set of resources as objects within the statements; and a pedigree assembly module executing on the processor to assemble the pedigree of the primary resource from the statements of the first set of pedigree fragments and the second set of pedigree fragments received from the pedigree management servers.