3841
Formaldehyde ( FA ) , which is an important chemical with a wide commercial use , has been classified as carcinogenic to humans by International Research on Cancer ( IARC ) .
 Chemical: Formaldehyde
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: Formaldehyde