Given the task definition, example input & output, solve the new input case.
In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
Example: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs.
Output: Who believes Fagin's gang make wallets and handkerchiefs?.
This question is based on the following sentence in the passage "He believes they make wallets and handkerchiefs". It evaluates the understanding that the pronoun "he" refers to name "Oliver". You can ask questions like this one about most pronouns in a paragraph.

New input case for you: Passage: The incident proved stressful for Hendrix, and it weighed heavily on his mind while he awaited trial. His limousine driver and a witness to the arrest, Louis Goldblatt, described him as "genuinely dumbfounded by the whole affair." Tour manager Eric Barrett said that he looked "as if there had been a plane crash". Hendrix biographers Harry Shapiro and Caesar Glebbeek described the incident as "a nightmare which ... plagued" him for seven months. According to Redding, "the bust knocked any positive feelings Jimi was holding onto out of him" and that he was in "agonised suspense" from the arrest until the trial. In 2012, Plummer wrote: "The real possibility of prison hung over Hendrix like a spectre ... a threat to his career and the cause of much brooding and rumination." Journalist Charles Shaar Murray asserted that the incident jeopardized what he described as "Hendrix's increasingly fragile peace of mind".
Two weeks after the arrest, Hendrix told Lawrence: "Whatever I have done ... getting hooked on heroin is not one of them." He explained that his fear of needles discouraged him from using the drug and that having known junkies convinced him that it was not something he should get involved with. Soon after the story of his arrest became public, he drew a connection between the bust and anti-establishment sentiments: "All of that is the establishment fighting back ... Eventually, they will swallow themselves up, but I don't want them to swallow up too many kids as they go along."According to Shapiro and Glebbeek, in 1969 there was little confidence in the staying power of rock stars; it was assumed that their careers were going to be short, and industry insiders operated under a "take the money and run" mentality. For this reason, they speculated that had Hendrix been convicted it would have ended his music career. After the trial, his management announced to the British press that they were planning a farewell tour for the Experience. However, the US tour during which the arrest occurred was their last. The band played their final concert on June 29, at Mile High Stadium in Denver (less than two months before Hendrix's iconic solo performance at Woodstock). There were no new album releases from them during 1969. Hendrix's management later stated that concert promoters were apprehensive about booking him until after the matter had been resolved.
Output:
What is the last name of the person whose limousine driver described him as "genuinely dumbfounded by the whole affair"?