Complex sentence: The men's 3000 metres steeplechase competition at the 2016 Summer Olympics in Rio de Janeiro, Brazil was held at the Olympic Stadium on 15 and 17 August.
Split into simpler sentences: The men's 3000 metres steeplechase competition at the 2016 Summer Olympics in Rio de Janeiro, Brazil. The event was held at the Olympic Stadium on 15 and 17 August.