Complex sentence: In 2004 Conference South club Margate spent a season sharing the ground while they tried to bring their Hartsdown Park stadium up to standard; from 2009 Maidstone United played at the stadium for two seasons whilst they tried to build their James Whatman Way ground.
Split into simpler sentences: In 2004 Conference South Margate spent a season sharing the ground while they tried to bring their Hartsdown Park stadium up to standard. In 2009 a deal was agreed for Maidstone United to share the stadium while they tried to build their James Whatman Way ground.