5940
Comparison with the crystal structure of Desulfovibrio gigas , Dg , Fd ( Kissinger et al . , 1991 ) reveals a very similar folding topology , although several secondary structural elements are extended in Pf relative to Dg Fd .
 GENE: Fd; GENE: Fd
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: Fd, Fd 
Answer:
 GENE: Fd; GENE: Fd