Complex sentence: Vancouver Initiative to Prevent Human Trafficking (BSNS) was a grassroots campaign that raised awareness about the male demand for paid sex that fuelshuman trafficking, in this case the 2010 Winter Olympics in Vancouver, British Columbia, Canada that facilitated the provision of prostitution for visitors.
Split into simpler sentences: Vancouver Initiative to Prevent Human Trafficking (BSNS) was a grassroots campaign that raised awareness about the male demand for paid sex that fuels human trafficking. The campaign was centered on the 2010 Winter Olympics in Vancouver, British Columbia, Canada, an event that facilitated the provision of prostitution for visitors.