Rewrite the following sentence by replacing the be verbs with an action verb. (请用一个英文词作答，全部小写) James is the inventor of this ing

Rewrite the following sentence by replacing the be verbs with an action verb. (请用一个英文词作答，全部小写) James is the inventor of this ingenious machine. James （） this ingenious machine.

正确答案：invented