Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Washington (CNN) Woody Guthrie, the iconic protest singer, once turned his pen toward Fred Trump, casting the current Republican front-runner's father as "Old Man Trump," according to a new dive into the Woody Guthrie Archives by University of Central Lancashire Professor Will Kaufman. "I suppose Old Man Trump knows just how much racial hate he stirred up," Guthrie wrote in one of his notebooks. Kaufman wrote Guthrie once lived in a Trump-owned Brooklyn apartment. Guthrie came to hate the development and the neighborhood for what he viewed as a hostile environment toward people of color -- and laid the blame on Trump.Guthrie once lived in a Brooklyn apartment owned by Donald Trump's father, Fred TrumpGuthrie came to hate the development and the neighborhood for what he viewed as a hostile environment toward people of color 
 Question:The _ campaign did not respond to a request for comment.

Fred Trump