6382
In addition , a spray dried MCM - 41 and an ethene bridged PMO are investigated .
 Chemical: MCM - 41; Chemical: ethene; Chemical: PMO
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: MCM - 41; Chemical: ethene; Chemical: PMO