Simplify the following text for a Grade 4 native English-speaking person.
Original: Although both Tragedy of Tragedies and The Author 's Farce were main shows , they alternated on the billing until the 18 June 1731 performance , the final showing of any Fielding play in the Little Theatre except for a 12 May 1732 benefit show of The Author 's Farce .
Simplified: The last regular show at the Little Theatre was 18 June 1731 . It was shown one time on 12 May 1732 .