Complex sentence: In April, 2011, in New Hampshire, AFP sponsored an informal gathering of Republican presidential candidates, including Mitt Romney, Tim Pawlenty, Michele Bachmann, Rick Santorum, and Herman Cain.
Split into simpler sentences: In April, 2011, AFP sponsored an informal gathering of Republican presidential candidates in New Hampshire. Candidates who participated included Mitt Romney, Tim Pawlenty, Michele Bachmann, Rick Santorum, and Herman Cain.