Complex sentence: Mary Anne Yates (1728-1787) was a was an English tragic actress, a bisexual and the president of a club of lesbians in London, known at that time as an Anandrinic society.
Split into simpler sentences: Mary Anne Yates (1728-1787) was a was an English tragic actress. She was bisexual, and the president of a lesbian club in London, known at that time as an Anandrinic society.