题目内容：
根据下列材料，请回答题The World No Tobacco Day theme for 2003 is Tobacco Free Films Tobacco Free Fashion Action ！World No Tobacco Day is celebrated around the world every year on May 31. This year World No Tobacco Day will focus on the role of the fashion and film world in fostering the worldwide tobacco epidemic and urge them to stop being used as vehicles of death and disease. The world of film and fashion cannot be accused of causing cancer. But they do not have to promote a product that does.
WHO is calling on the entertainment industry, in particular the world of films and fashion, to stop promo- ting a product that kills a regular user every second. In November 2002, WHO was joined by medical associa- tions and the Smoke Free Films project at the University of California in San Francisco in its call to the entertain- ment and fashion industries to ensure that their social responsibility is commensurate with their global influence. Many famous film production companies, such as Bollywood and Hollywood, were invited to join the worldwide movement to rid films of their tobacco-promoting role.
Which day is the World No Tobacco Day?
It is ____________________________every year.
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