5568
A VUV photoionization study of the multichannel reaction of phenyl radicals with 1 , 3 - butadiene under combustion relevant conditions .
 Chemical: phenyl; Chemical: 1 , 3 - butadiene
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: phenyl; Chemical: 1 , 3 - butadiene