Have you received public assistance in the United States from any source, including the U.S. Government or any State, county, city, or municipality (other than emergency medical treatment), or are you likely to receive public assistance in the future?

I had once (when I was in school) got a short term assistance when I was in school. I had some medical problem and I had to pay nothing for my X-ray then. It was like 6 years back. Now, do I need to say "Yes" to the question above? It is a medical assistance but not emergency medical treatment. I am confused how shall I proceed. Anyone here, could you please help me? Thanks in advance.