Complex sentence: London hosted Europe's first "masturbate-a-thon" on August 5,2006 in which hundreds of people raised money for the charities Terrence Higgins Trust and sexual and reproductive health agency Marie Stopes International.
Split into simpler sentences: London hosted Europe's first "masturbate-a-thon" on August 5,2006. Hundreds of persons raised money for the charity Terrence Higgins Trust and the sexual-and reproductive-health agency Marie Stopes International.