27787
Finally , we made preliminary two - dimensional ( 2D ) calculations of the cross sections for rotationally inelastic H - CO collisions with the CO bond length fixed and obtained good agreement with recently published 2D results .
 Chemical: H; Chemical: CO; Chemical: CO
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: H, CO, CO 
Answer:
 Chemical: H; Chemical: CO; Chemical: CO