Which Rick Riordan's book is the most successful?
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Rick Riordan was educated at the University of Texas System.
Rick Riordan was educated at the University of Texas System .
Which Rick Riordan's book is the most successful?</s>Rick Riordan was educated at the [unused1]University of Texas System                [unused2] .
Which Rick Riordan's book is the most successful?</s>Rick Riordan was educated at the University of Texas System.
Which Rick Riordan's book is the most successful?</s>Rick Riordan was educated at the [unused1]University of Texas System                [unused2] .
Which Rick Riordan's book is the most successful?</s>Rick Riordan was educated at the University of Texas System .
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Which Rick Riordan's book is the most successful?</s>University of Texas System,0,University of Texas System,University of Texas System,0,Rick Riordan,Rick Riordan,educated at,University of Texas System,Rick Riordan,0,Rick Riordan