1920
From an RNK - 16 lambda - gt11 library , we have isolated and sequenced a novel cDNA rat NK cell protease 1 ( RNKP - 1 ) that has characteristics unique to serine proteases .
 GENE: rat NK cell protease 1; GENE: RNKP - 1; GENE: serine proteases
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: rat NK cell protease 1, RNKP - 1, serine proteases 
Answer:
 GENE: rat NK cell protease 1; GENE: RNKP - 1; GENE: serine proteases