How to make namespace
1. deploy the d2r server into tomcat
2. set the base URI
3. modify the parameters in the mapping file.
namespace of chem2bio2rdf
http://chem2bio2rdf.org/rdf/resource/chemogenomics/3973:PIM1

how to link to LODD and Bio2RDF and its official URI.
We use sameAs if they are talking one subject.
for example:
drug:
chem2bio2rdf:
dereferenceable