Complex sentence: On December 17,1961, a burning circus tent fell on 2,500 spectators in the Brazilian city of Niterói, and Pitanguy worked tirelessly to treat burn victims for weeks on an emergency basis.
Split into simpler sentences: On December 17,1961, a burning circus tent fell on 2,500 spectators in the Brazilian city of Niterói. Pitanguy treated burn victims for weeks on an emergency basis.