Complex sentence: With Pingo, Pingg and Pingi urging him on, Pingu gathers his courage and jumps, but changes his mind at the last minute and just manages to grab hold of the edge of the diving block before he falls, thinking it might be frozen solid.
Split into simpler sentences: With Pingo, Pingg, and Pingi urging him on, Pingu gathers his courage and jumps, but changes his mind at the last minute. He just manages to grab hold of the edge of the diving block before he falls, thinking it might be frozen solid.