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Bezos has not revealed any additional details about the initiative since February.
Benioff's donation will be used to cover the first five years of rents of the building leased on a 20-year term. The rents will range from 500 dollars to 650 dollars a month.
Bezos put forth a similar challenge in his annual letter to shareholders last year.
Bernard Oosterom, president of the International Association of Horticultural Producers, also praised the expo.
Bernie Sanders, a US Democratic presidential candidate, criticized Trump for claiming "America's extraordinary prosperity" in Davos.
来源：资阳报