| http://www.w3.org/ns/prov#value | - If persons constituting a class are so numerous as to make it impracticable to bring them all before the court, such of them, one or more, as will fairly insure adequate representation for all may, on behalf of all, sue or be sued, when the character the right sought to be enforced for or against the class is (3) several, and there is a common question of law or fact affecting their several rights
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