Most of the programming was part of a strand titled the World Shakespeare Festival, which included translations, adaptations, and re-workings of Shakespeare's plays. Programming themed around the plays of William Shakespeare was a major part of the "London 2012 Festival". It was produced by the Royal Shakespeare Company and sponsored by the Arts Council, BP and Lottery with about 60 participating organisations including the BBC, British Museum, National Theatre, the Barbican Centre, the Almeida Theatre and Shakespeare's Globe. This festival began on 23 April 2012 and finished in November 2012. It included approximately 70 productions related to Shakespeare's plays, over half of which were performed in a language other than English (particularly those which formed part of the Globe to Globe Festival at Shakespeare's Globe). Shakespeare also featured in the BBC's 'Shakespeare Unlocked' 2012 season (particularly "The Hollow Crown" and in the 2012 Summer Olympics opening ceremony. The World Shakespeare Festival also included the Worlds Together Conference, an international interdisciplinary conference exploring the role of Shakespeare and arts learning in young people's lives. At the grass roots and with the support of the performers' union, Equity, many events occurred around the country, not least the première of a new play entitled Shakespeare's Queen Elizabeth the Second, which was also performed in Stratford-upon-Avon and open air celebration of Shakespeare in, literally, John O'Groats and many locations south. Equity-backed events also occurred in London, for young people and school children, every two months from 2010–2012.