7465
Guided by the principles of dislocation theory , we use the first - principles calculations to determine the structure and properties of dislocations and grain boundaries ( GB ) in single - layer transition metal disulfides MS ( 2 ) ( M = Mo or W ) .
 Chemical: transition metal disulfides; Chemical: MS ( 2 ); Chemical: Mo; Chemical: W
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: transition metal disulfides; Chemical: MS ( 2 ); Chemical: Mo; Chemical: W