Complex sentence: The tennis tournaments at the 2012 Summer Olympics in London were staged at the All England Club in Wimbledon, from 28 July to 5 August, the first grass court tournament since tennis was reintroduced to the Olympics.
Split into simpler sentences: The tennis tournaments at the 2012 Summer Olympics in London were staged at the All England Club in Wimbledon, from 28 July to 5 August. This was the first grass court tournament since tennis was reintroduced to the Olympics.