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Table 9 The ten most frequent types of semantic relations extracted from the whole MEDLINE

From: Wide-coverage relation extraction from MEDLINE using deep syntax

Rank

Semantic relation type

#Relation

#Unique

 

Entity 1

Entity 2

  

1

Amino acid, Peptide or protein

Amino acid, Peptide or protein

3,424,145

1,057,771

2

Cell

Amino acid, Peptide or protein

3,140,492

711,603

3

Gene or genome

Amino acid, Peptide or protein

1,821,923

766,084

4

Disease or syndrome

Disease or syndrome

1,780,634

599,355

5

Body part, Organ, or Organ component

Amino acid, Peptide or protein

1,720,271

561,839

6

Amino acid, Peptide or protein

Disease or syndrome

1,621,104

631,343

7

Gene or genome

Cell

1,142,425

315,794

8

Organic chemical

Organic chemical

1,122,133

365,631

9

Body part, Organ, or Organ component

Body part, Organ, or Organ component

1,119,095

270,886

10

Laboratory procedure

Amino acid, Peptide or protein

1,109,260

453,359