As important consideration as capacity factors is the expansion potential and how fast build out is now and can in the future proceeding to meet demand.

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The Franco-Dutch carrier has so far ordered 12 regular A380s, with a passenger capacity of 555, but a stretched version under consideration by Airbus would carry 656 people.

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For the trainings, as well as for its capacity building initiative as a whole, UNESCO gives special consideration to addressing first African States, in line with demand.

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"Capacity, infrastructure, facilities and functionality" were listed by Uefa as the criteria under consideration for the stadia, as well as legal documentation, accommodation and airport facilities.

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But a still stronger consideration is the importance of adhering to a simple principle, intelligible to the most untaught capacity.

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