Complex sentence: This function was given by Britney Gallivan in 2001 (then only a high school student) who managed to fold a sheet of paper in half 12 times, contrary to the popular belief that paper of any size could be folded at most eight times.
Split into simpler sentences: This function was given by Britney Gallivan in 2001 (then only a high school student) who managed to fold a sheet of paper in half 12 times. It had previously been a long-held belief that paper of any size could be folded at most eight times.