Task: Question Answering
Input (English): Passage: Following the death of rancher John Dodge, foreman Gene Autry is left the responsibility of taking care of Rancho Grande ranch and Dodge's three spoiled grandchildren raised in the east. Gene is also responsible for completing a major project started by Dodge—the construction of an irrigation system that would bring valuable water to the faithful Rancho Grande employees in the southern part of the valley. Dodge mortgaged his ranch in order to finance the project.
When Dodge's grandchildren, Tom, Kay, and Patsy, arrive from the east, they are unimpressed with life on the ranch. Tom and Kay are madcap college types who think ranchlife is boring and long to return to the big city. They resent Gene's authority and dismiss his talk of developing a work ethic and the importance of the irrigation project. Meanwhile, crooked lawyer Emory Benson is planning to seize the mortgage to Rancho Grande. After meeting Tom and Kay, he decides to take advantage of their discontent in order to slow the irrigation project and prevent the bank from renewing the mortgage.
Gradually, Gene is able to win Kay over to his way of thinking, but Tom falls in with a group of partying tenderfoots from the east. He invites them to stay at Rancho Grande, where they get in everyone's way. Gene and his sidekick Frog Millhouse finally succeed in scaring the dudes off the ranch. Angered by Gene's actions, Tom and Kay decide to leave. When a rockslide at the irrigation project site injures Jose, a faithful Rancho Grande employee, Tom and Kay come to their senses and pledge to help complete the project on time. 
Question: What is the last name of the person who had a sidekick Frog Millhouse?
Output (English): Autry.