prov:value
| - a) In the event any part of the exhibit or classroom area, or any portion thereof, is unavailable whether for the entire event, or a portion of the event as a result of fire, flood, tempest or any other such cause or as a result of war, strike, lock-out, labor dispute, riot or any other cause or agency over which the Expo has no control, or should the Expo decide that because of any such cause it
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