The term 'Watson's Creator' is a reference to the creator of the fictional character Sherlock Holmes, Arthur Conan Doyle, and the company IBM. Doyle is a five letter word, and IBM is a three letter word. Arthur Conan Doyle was a Scottish author who wrote four novels and 56 short stories featuring the detective Sherlock Holmes. IBM is an American multinational technology company that developed the artificial intelligence computer system Watson.