Take the following as truth: But the major breakthrough for the Malay economy was the triumph of rubber, when Singapore's new garden director, Henry Ridle ( Rubber Ridley  to his friends,  Mad Ridley  to all doubting Thomases) had developed new planting and tapping methods and painstakingly spread his faith in rubber around the peninsula.
Then the following statement: "His friends referred to him as Rubber Ridley" is true, false, or inconclusive?
Answer: False