A particularly successful form of multi-stakeholder cooperative is the Italian social cooperative, of which some 11,000 exist.  1 Type A social cooperatives bring together providers and beneficiaries of a social service as members.
The sport of Quidditch gets its name from Queerditch Marsh, the location of the first recorded game. A witch by the name of Gertie Keddle lived on the edge of the marsh around the year 1050 and recorded what she saw in a diary that survives to this day.
A Quidditch pitch is typically in the shape of an oval, five hundred feet long and a hundred and eighty feet wide, with a small central circle of approximately two feet in diameter. At each end there are three hooped Goal posts of different heights, surrounded by a scoring area.