| http://www.w3.org/ns/prov#value | - CHALLENGES The PA convention is held in a different international location each year, and although it is not a huge event ??? usually drawing 80 to 110 people, including 20 to 30 speakers and presenters and the same number of volunteers ??? one of the bigger challenges, according to Ventola, is the fact that the presenters and volunteers are completely different each convention. ???After putting to
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