"I can't line Arthur up against any of the Mexicans until we know about Guzman, whether or not he wants to fight, " said Warren.

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"I don't think cheaper is part of the equation, " says Arthur T.

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Class A buildings are typically filled with large corporations or law firms, and landlords often have trouble renting out the one or two leftover rooms these big guys don't want, says Arthur Pasquarella , chief operating officer of BPG Properties .

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