29198
High - Accuracy Estimates for the Vinylidene - Acetylene Isomerization Energy and the Ground State Rotational Constants of : C = CH2 .
 Chemical: Vinylidene; Chemical: Acetylene; Chemical: : C = CH2
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: Vinylidene; Chemical: Acetylene; Chemical: : C = CH2