15655
The results confirmed : ( a ) the effectiveness of single process indicators of roasting selected by the separative method ( 5 - methylfurfural , 1 ( H ) - pyrrole , furfuryl alcohol , 1 ( H ) - pyrrole - 2 - carboxaldehyde , 1 - hydroxy - 2 - propanone , dihydro - 2 ( 3H ) - furanone , 5 - methyl - ( E ) - 2 - hepten - 4 - one , acetic acid , pyridine , furfural , pyrazine , and several alkyl - pyrazines ) ; and , ( b ) the reliability of proposed chemical indices : 5 - methylfurfural / 2 , 5 - dimethylpyrazine , 5 - methylfurfural / 2 - methylpyrazine , 2 , 5 - dimethylpyrazine / 2 , 3 - dimethylpyrazine ; these maintained a consistent trend versus harvest and sampling / analysis technology .
 Chemical: 5 - methylfurfural; Chemical: 1 ( H ) - pyrrole; Chemical: furfuryl alcohol; Chemical: 1 ( H ) - pyrrole - 2 - carboxaldehyde; Chemical: 1 - hydroxy - 2 - propanone; Chemical: dihydro - 2 ( 3H ) - furanone; Chemical: 5 - methyl - ( E ) - 2 - hepten - 4 - one; Chemical: acetic acid; Chemical: pyridine; Chemical: furfural; Chemical: pyrazine; Chemical: alkyl - pyrazines; Chemical: 5 - methylfurfural; Chemical: 2 , 5 - dimethylpyrazine; Chemical: 5 - methylfurfural; Chemical: 2 - methylpyrazine; Chemical: 2 , 5 - dimethylpyrazine; Chemical: 2 , 3 - dimethylpyrazine
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: 5 - methylfurfural; Chemical: 1 ( H ) - pyrrole; Chemical: furfuryl alcohol; Chemical: 1 ( H ) - pyrrole - 2 - carboxaldehyde; Chemical: 1 - hydroxy - 2 - propanone; Chemical: dihydro - 2 ( 3H ) - furanone; Chemical: 5 - methyl - ( E ) - 2 - hepten - 4 - one; Chemical: acetic acid; Chemical: pyridine; Chemical: furfural; Chemical: pyrazine; Chemical: alkyl - pyrazines; Chemical: 5 - methylfurfural; Chemical: 2 , 5 - dimethylpyrazine; Chemical: 5 - methylfurfural; Chemical: 2 - methylpyrazine; Chemical: 2 , 5 - dimethylpyrazine; Chemical: 2 , 3 - dimethylpyrazine