Complex sentence: Robert Spillane died on July 10,2010 when he leaned against an unsecured window screen in his apartment in the Hell's Kitchen area of NYC while calling down to his brother Michael on the street falling to the sidewalk below.
Split into simpler sentences: Robert Spillane died on July 10,2010 in the Hell's Kitchen area of NYC. He leaned against an unsecured window screen in his apartment, falling to the sidewalk below.