We can describe the connectivity between documents, structures and bioactivity as conceptual triage routinely performed by readers of medicinal chemistry or pharmacology papers . Typically, we peruse a document "D" that describes a bioactivity "A" with a quantitative result "R" (e.g. an IC50 assay) for chemical structure "C" that inhibits protein "P" in vitro (and by inference possibly in vivo). A useful shorthand thus becomes "D-A-R-C-P" (DARCP) as shown schematically in Fig. Figure . A schematic of the document > assay > result > compound > > protein target relationships, D-A-R-C-P