SELECT (COUNT(?sub) AS ?subcnt) ?protein FROM <http://rdf.ncbi.nlm.nih.gov/pubchem/substance> FROM <http://rdf.ncbi.nlm.nih.gov/pubchem/measuregroup> FROM <http://rdf.ncbi.nlm.nih.gov/pubchem/endpoint> FROM <http://rdf.ncbi.nlm.nih.gov/pubchem/protein> WHERE { ?sub obo:BFO_0000056 ?mg . ?mg obo:BFO_0000057 ?protein . ?protein rdf:type bp:Protein . ?mg obo:OBI_0000299 ?ep . ?ep rdf:type bao:BAO_0000190 ; obo:IAO_0000136 ?sub ; sio:has-value ?value .  } GROUP BY ?protein ORDER BY ASC (COUNT(?sub))