Table 5.

Semantic Types with Different Relationship Structures in the Semantic Network and the Enriched Semantic Network

Semantic Type	No. of Relationships in Semantic Network	No. of Relationships in Enriched Semantic Network	Diff
Anatomical Entity	N/A	3	N/A
Physical Anatomical Entity	N/A	3	N/A
Conceptual Anatomical Entity	N/A	3	N/A
Material-Physical Anatomical Entity	N/A	3	N/A
Body Space or Junction	42	43	1
Body Location or Region	34	35	1
Body System	5	6	1
Body Substance	28	29	1
Gene or Genome	72	73	1
Enzyme	86	87	1
Injury or Poisoning	86	178	92
Laboratory or Test Result	105	127	22
Organism Attribute	69	121	52
Clinical Attribute	69	121	52
Receptor	86	153	67
Vitamin	86	109	23
Total: 16			314