. "Isaac"@en . "PLATT, John Isaac, and CHALLINOR (John)" . . "and CHALLINOR (John) John Isaac PLATT" . "John I. Platt" . "Platt, John I. (John Isaac)" . . "John Platt" . "Platt"@en . . "John Isaac Platt"@en . . "John"@en . "PLATT" . "I." . . . .