Generate a context and a hypothesis.
Context: The 2013 USA Outdoor Track and Field Championships was held at Drake Stadium in Des Moines, Iowa. Organised by USA Track and Field, the four-day competition took place June 20–23 in conjunction with the USA Junior Outdoor Track & Field Championships which started the day before and served as the national championships in track and field for the United States.

Hypothesis: Iowa was home to the USA Outdoor Track and Field Championships in 2013.