* source code:

FedX3.1

 http://www.fluidops.com/en/company/training/open_source

* execute:

example:

[fsearch@cl38 FedX]$ java -jar FedX3.1.jar -d bio2RDF.ttl -f STDOUT -q  "select
 ?s1 ?o1 ?o2 where{ ?s1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http
://bio2rdf.org/omim_vocabulary:Gene>.?s1   <http://bio2rdf.org/omim_vocabulary:
refers-to> ?o1. ?o1   <http://bio2rdf.org/omim_vocabulary:x-snomed> ?o2.<http:/
/bio2rdf.org/pharmgkb:PA446359> <http://bio2rdf.org/pharmgkb_vocabulary:x-snome
dct> ?o2.}"

Result:

query1: return 5 results

query2: return 790 results

query2: return 9492 results

Query\time(ms)	time 1	time 2	time 3	time 4	time 5
case1	11624	9469	10377	8978	9355
case2	113629	108622	109989	109297	109796
case3	106218	108579	109989	107731	106713