This picture shows adults playing organized street hockey in a league.  This is generally refereed to as "dek hockey" or "ball hockey".  They are playing in an outdoor rink that is 175 feet long by 80 feet wide.  Each team has 5 runners and a goaltender.  There are 2 officials in each game.  In this photo, the person wearing the green polo shirt is an official.
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<span class="int-own-work" lang="en">Own work</span>