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.

[Q]: 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.
[A]: Who was replaced by John Lightman?


[Q]: Passage: A woman's dead body is shown in a cluster of lantana bushes. 
Leon, a police officer, and Jane, have sex in a motel room. They part ways, and Leon and his wife, Sonja, attend Latin dance classes that the recently separated Jane is also taking.
Leon does not enjoy the classes. He is seen savagely beating a drug dealer during a bust. He has emotional issues but refuses to confront or admit to them. Sonja sees a therapist, Valerie, who has just published a book on her own daughter's murder 18 months ago. She and her husband, John, are barely on speaking terms; he later refers to their marriage as held together by their grief. She feels threatened by another patient, Patrick Phelan, who is having an affair with a married man, which forces Valerie to confront her own issues in her marriage to John.
Hoping to see Leon again, Jane purposely bumps into him outside the police station, and they have sex again despite Leon's reservations. Nik is upset that she is seeing someone because he is friends with her estranged husband, Pete, who wants to return home. Jane pairs up with Sonja in the next salsa class, which angers Leon, who ends their arrangement, which upsets Jane. She invites Nik over for coffee at the behest of Paula, with whom she is friendly and offers him money as they are struggling. Paula now starts to dislike Jane.
Valerie is coming home late one night and drives off the road. She is stranded and makes several calls to John, who does not answer. Finally, she is seen approaching a car coming along the road but never makes it home. Leon is the investigating detective on the case and looks into her office and notes.  Surprised at seeing his wife's name and file, he takes an audio recording of their sessions.
[A]: Whose disappearance is Leon investigating when he finds tapes of his wife's therapy sessions?


[Q]: Passage: In 1968, Pink Floyd returned to Abbey Road Studios to record their second album, A Saucerful of Secrets. The album included Barrett's final contribution to their discography, "Jugband Blues". Waters began to develop his own songwriting, contributing "Set the Controls for the Heart of the Sun", "Let There Be More Light" and "Corporal Clegg". Wright composed "See-Saw" and "Remember a Day". Norman Smith encouraged them to self-produce their music, and they recorded demos of new material at their houses. With Smith's instruction at Abbey Road, they learned how to use the recording studio to realise their artistic vision. However, Smith remained unconvinced by their music, and when Mason struggled to perform his drum part on "Remember a Day", Smith stepped in as his replacement. Wright recalled Smith's attitude about the sessions, "Norman gave up on the second album ... he was forever saying things like, 'You can't do twenty minutes of this ridiculous noise'". As neither Waters nor Mason could read music, to illustrate the structure of the album's title track, they invented their own system of notation. Gilmour later described their method as looking "like an architectural diagram".Released in June 1968, the album featured a psychedelic cover designed by Storm Thorgerson and Aubrey Powell of Hipgnosis. The first of several Pink Floyd album covers designed by Hipgnosis, it was the second time that EMI permitted one of their groups to contract designers for an album jacket. The release peaked at number 9, spending 11 weeks on the UK chart. Record Mirror gave the album an overall favourable review, but urged listeners to "forget it as background music to a party". John Peel described a live performance of the title track as "like a religious experience", while NME described the song as "long and boring ... [with] little to warrant its monotonous direction". On the day after the album's UK release, Pink Floyd performed at the first ever free concert in Hyde Park. In July 1968, they returned to the US for a second visit. Accompanied by the Soft Machine and the Who, it marked Pink Floyd's first significant tour. In December of that year, they released "Point Me at the Sky"; no more successful than the two singles they had released since "See Emily Play", it would be the band's last until their 1973 release, "Money".
[A]:
What is the full name of the person that stepped in as the drummer in "Remember a Day"?