source: It was nearly impossible to control the instrument, by most accounts
target: Most people said that the device was very hard to control.
references: Most people said that the device was very hard to control. Most people say the instrument was almost impossible to control It was found that the instrument was nearly impossible to control. The instrument was almost impossible to control. Most said, the tool was almost impossible to control. By most accounts, the instrument was nearly impossible to control. Most accounts is that the instrument was almost impossible to control.