27679
In this review , an overview of proposed reaction mechanisms for the MTO process is given , focusing on the archetypal MTO catalysts , H - ZSM - 5 and H - SAPO - 34 .
 Chemical: H - ZSM - 5; Chemical: H - SAPO - 34
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: H - ZSM - 5; Chemical: H - SAPO - 34