Complex sentence: Her work in comedy began as a result of starring in a Donmar Warehouse play called "Songs For Stray Cats" and hearing the audience invited to supply lines and ideas for improvisers appearing in after-show cabaret.
Split into simpler sentences: Her work in comedy began as a result of starring in a Donmar Warehouse play called "Songs For Stray Cats". The audience invited to supply lines and ideas for improvisers appearing in after-show cabaret.