Definition: In this task you will be given a passage and a yes/no question based on the passage. You should answer the question using the information from the passage.
Input: passage: The Singapore chewing gum ban has been in place since 1992. An exception is made for therapeutic, dental or nicotine chewing gum since 2004, which can be bought from a doctor or registered pharmacist.
 question: is it illegal to chew gum in singapore?

Yes