Simplify the following text for a Grade 7 native English-speaking person.
Original: To determine the semi-final running orders for the Eurovision Song Contest , participating nations were split into six pots on 17 January 2011 .
Simplified: The draw to determine the semi-final running orders was held on Monday 17 January 2011 . Participating nations were split into six pots based on voting patterns up to 2010 .