instruction:
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.
question:
Passage: The management of Rockefeller Center shifted around this time. In November 1936, John Todd was featured in two New Yorker articles that emphasized his role in the complex's construction. At the same time, Nelson was gaining clout within Rockefeller Center Inc., and he disagreed with nearly all of Todd's suggestions. Nelson's father, John, was relinquishing his responsibilities, since the Rockefeller family's youngest son David had moved out of the family home at 10 West 54th Street, and John was now focusing on his own personal life. By April 1937, Todd regretted his decision to be featured in The New Yorker. In March 1938, Nelson became the president of Rockefeller Center Inc. He then fired Todd as the complex's manager and appointed Hugh Robertson in his place. Nelson and Robertson wanted to avoid workers' strikes, which would delay the completion of construction. Nelson, Robertson, and the workers' unions agreed to a contract in which the unions would not strike, Robertson would not lock out union workers, and both would agree to arbitration if a labor dispute arose. Rockefeller Center was one of Nelson's primary business ventures until 1958, when he was elected Governor of New York.Public relations officials were hired to advertise the different parts of the complex, such as the gardens and the plaza. Merle Crowell set up a viewing platform on the east side of Rockefeller Center and founded the facetious "Sidewalk Superintendents' Club" so the public could view construction.
answer:
What is the first name of the person who appointed Hugh Robertson as the complex manager?

question:
Passage: When the ship passed Cape Adare, the direction of drift changed to north-westerly. On 10 August Stenhouse estimated that they were 45 nautical miles (83 km) north-east of the Cape, and that their daily drift was averaging just over 20 nautical miles (37 km). A few days later Stenhouse recorded that the ship was "backing and filling", meaning that it was drifting back and forth without making progress. "However, we cannot grumble and must be patient", he wrote, adding that from the crow's nest a distinct impression of open water could be seen. With the possibility that the edge of the pack was nearby, work on the construction of a jury rudder began. This first involved the removal of the wreckage of the smashed rudder, a task largely carried out by Engineer Donnelly. The jury rudder was constructed from makeshift materials, and by 26 August was ready for use as soon as Aurora cleared the ice. It would then be lowered over the stern and operated manually, "like a huge oar".
On 25 August Hooke began picking up occasional radio signals being exchanged between Macquarie Island and New Zealand. By the end of August open leads were beginning to appear, and sometimes it was possible to discern a sea-swell under the ship. Severe weather returned in September, when a hurricane-force wind destroyed the wireless aerial and temporarily halted Hooke's efforts. On 22 September, when Aurora was in sight of the uninhabited Balleny Islands, Stenhouse estimated that they had travelled over 700 nautical miles (1,300 km) from Cape Evans, in what he called a "wonderful drift". He added that regular observations and records of the nature and direction of the ice had been maintained throughout: "It [the drift] has not been in vain, and [...] knowledge of the set and drift of the pack will be a valuable addition to the sum of human knowledge".Aurora's circumstances changed little during the following months. Stenhouse worked hard to maintain morale, keeping the crew working whenever possible and organising leisure activities, including games of football and cricket on the ice. On 21 November Aurora crossed the Antarctic Circle, and it was at last evident that the ice around the ship was beginning to melt: "...one good hefty blizzard would cause a general break up", wrote Stenhouse. Christmas approached with the ice still holding firm; Stenhouse allowed the crew to prepare a feast, but noted in his journal: "I wish to God the blasted festivities were over [...] we are hogging in to the best while the poor beggars at Cape Evans have little or nothing!" A few days later the New Year was celebrated with an improvised band leading choruses of "Rule, Britannia" and "God Save the King".
answer:
What is the name of the ship whose direction of drift changed northwesterly on passing Cape Adare?

question:
Passage: The frustration at #1 Record's obstructed sales contributed to tension within the band. There was physical fighting between members: Bell, after being punched in the face by Hummel, retaliated by smashing Hummel's new bass guitar to pieces against the wall. Hummel took revenge at a later date: Finding Bell's acoustic guitar in the latter's unattended car, he repeatedly punched it with a screwdriver. In November 1972, Bell quit the band. When work continued on songs for a second album, Bell rejoined, but further conflict soon erupted. A master tape of the new songs inexplicably went missing, and Bell, whose heavy drug intake was affecting his judgment, attacked Fry's parked car. In late 1972, struggling with severe depression, Bell quit the band once more, and by the end of the year Big Star disbanded.
After a few months Chilton, Stephens, and Hummel decided to reform Big Star, and the three resumed work on the second album. The title chosen, Radio City, continued the play on the theme of a big star's popularity and success, expressing what biographer Robert Gordon calls the band's "romantic expectation". As Hummel put it,
This was probably pretty lame, but in those days putting any word in front of the noun "city" to sort of emphasize the totality and pervasiveness of it was just a way of talking people had. If someone suggested going to a store but you had gotten a bad deal there you might say, "Oh no, that place is 'rip off city'." Calling an LP Radio City would be kind of wishful thinking. I mean we hoped it would be played on the radio a lot, making it "radio city". Of course it didn't pan out that way... Stephens recalled: "Radio City, for me, was just an amazing record. Being a three-piece really opened things up for me in terms of playing drums. Drums take on a different role in a three-piece band, so it was a lot of fun. [...] Radio City was really more spontaneous, and the performances were pretty close to live performances."Although uncredited, Bell contributed to the writing of some of the album's songs, including "O My Soul" and "Back of a Car". Shortly before the album's release, Hummel left the band: judging that it would not last, and in his final year at college, he elected to concentrate on his studies and live a more normal life. He was replaced by John Lightman for a short tenure prior to the band dissolving.
answer:
Who was replaced by John Lightman?