Complex sentence: Beals eluded Tracy by hiding inside a giant soda bottle that was intended for use as part of an advertising billboard; while Beals was inside the bottle, workmen attached it to the billboard several hundred feet above the ground.
Split into simpler sentences: Beals eluded Tracy by hiding inside a giant soda bottle that was intended for use as part of an advertising billboard. While Beals was inside the bottle, workmen attached it to the billboard several hundred feet above the ground.