Question: What song about a medical student named Maxwell Edison who commits murders with a hammer was first issued a single in Central America?

full_context: Document 1: Dear Prudence: "Dear Prudence" is a song by the English rock group the Beatles from their 1968 album "The Beatles" (also known as "the White Album"). The song was written by John Lennon, and credited to Lennon–McCartney. Written in India, it was inspired by Prudence Farrow, a sister of actress Mia Farrow, who became obsessive about meditating while practising with Maharishi Mahesh Yogi.
Document 2: Hello, Goodbye: "Hello, Goodbye" is a song by the English rock band the Beatles, written by Paul McCartney and credited to Lennon–McCartney. Backed by John Lennon's "I Am the Walrus", it was issued as a non-album single in November 1967, the group's first release since the death of their manager, Brian Epstein. The single was commercially successful around the world, topping charts in the United States, the United Kingdom, Canada, Australia and several other countries.
Document 3: Maxwell's Silver Hammer: "Maxwell's Silver Hammer" is a song by the Beatles, sung by Paul McCartney on their album "Abbey Road". It was written by McCartney, though credited to Lennon–McCartney. "Maxwell's Silver Hammer" is a rock song with dark, eccentric lyrics about a medical student named Maxwell Edison who commits murders with a hammer, although the lyrics are disguised by the upbeat, catchy, and rather "childlike" sound of the song.
Document 4: Let It Be (song): "Let It Be" is a song by the English rock band the Beatles, released in March 1970 as a single, and (in an alternate mix) as the title track of their album "Let It Be". At the time, it had the highest debut on the "Billboard" Hot 100, beginning its chart run at number 6. It was written and sung by Paul McCartney. It was their final single before McCartney announced his departure from the band. Both the "Let It Be" album and the US single "The Long and Winding Road" were released after McCartney's announced departure from and the subsequent break-up of the group.
Document 5: Rocky Raccoon: "Rocky Raccoon" is a song by the Beatles from the double album "The Beatles" (also known as the "White Album"). The song was primarily written by Paul McCartney, who was inspired while playing acoustic guitar with John Lennon and Donovan in India (where the Beatles had gone on a retreat).
Document 6: Oh! Darling: "Oh! Darling" is a song by the English rock band the Beatles, composed by Paul McCartney (credited to Lennon–McCartney), and appearing as the fourth song on the 1969 album "Abbey Road". Its working title was "Oh! Darling (I'll Never Do You No Harm)". Although not issued as a single in either the United Kingdom or the United States, a regional subsidiary of Capitol successfully edited it as a single in Central America, having "Maxwell's Silver Hammer" as its B-side. It was also issued as a single in Portugal. Apple Records released "Oh! Darling" in Japan with "Here Comes the Sun" in June 1970.
Document 7: All My Loving: "All My Loving" is a song by the English rock band the Beatles, written by Paul McCartney (credited to Lennon–McCartney), from the 1963 album "With the Beatles". Though it was not released as a single in the United Kingdom or the United States, it drew considerable radio airplay, prompting EMI to issue it as the title track of an EP. The song was released as a single in Canada, where it became a number one hit. The Canadian single was imported into the US in enough quantities to peak at number 45 on the "Billboard" Hot 100 in April 1964.
Document 8: The End (Beatles song): "The End" is a song by the Beatles composed by Paul McCartney (credited to Lennon–McCartney) for the album "Abbey Road". It was the last song recorded collectively by all four Beatles, and is the final song of the medley that constitutes the majority of side two of the album.
Document 9: Return to Pepperland: Return to Pepperland is a cancelled Paul McCartney album recorded in 1984–1987. The album was built up of mostly home demos and was a reflection of work from McCartney's career as a member of the English rock band the Beatles. Although it was made around twenty years after the release of the Beatles' 1967 album "Sgt. Pepper's Lonely Hearts Club Band" (which inspired it), some tracks which made their way onto the bootleg were written whilst McCartney was in the Beatles, including the Lennon–McCartney-written "Love Me Do" and "P.S. I Love You". Other songs turned up on CD-single B-sides including the McCartney/Stewart song "Don't Break the Promise".
Document 10: Penny Lane: "Penny Lane" is a song by the Beatles. It was written primarily by Paul McCartney but credited to the Lennon–McCartney songwriting partnership. The lyrics refer to a real street in Liverpool, England.
Document 11: Get Back: "Get Back" is a song recorded by the Beatles and written by Paul McCartney (though credited to Lennon-McCartney), originally released as a single on 11 April 1969 and credited to "The Beatles with Billy Preston." A different mix of the song later became the closing track of "Let It Be" (1970), which was the Beatles' last album released just after the group split. The single version was later issued on the compilation albums "1967–1970", "20 Greatest Hits", "Past Masters", and "1".
Document 12: When I'm Sixty-Four: "When I'm Sixty-Four" is a song by the Beatles, written by Paul McCartney (credited to Lennon–McCartney) and released in 1967 on their album "Sgt. Pepper's Lonely Hearts Club Band".
Document 13: Lucy in the Sky with Diamonds: "Lucy in the Sky with Diamonds" is a song credited to Lennon–McCartney that appears on the Beatles' 1967 album "Sgt. Pepper's Lonely Hearts Club Band". It was started by John Lennon, then Paul McCartney contributed to it in a songwriting session. Lennon's son Julian inspired the song with a nursery school drawing he called "Lucy—in the sky with diamonds". Shortly after the song's release, speculation arose that the first letter of each of the title nouns intentionally spelled "LSD". Lennon consistently denied this, insisting the song's fantastical imagery was inspired by Lewis Carroll's "Alice in Wonderland" books, a claim repeatedly confirmed by Paul McCartney.
Document 14: Octopus's Garden: "Octopus's Garden" is a song by the Beatles written and sung by Ringo Starr (credited to his real name Richard Starkey) from the Beatles' 1969 album "Abbey Road". George Harrison, who assisted Starr with the song, commented: "'Octopus's Garden' is Ringo's song. It's only the second song Ringo has ever written, mind you, and it's lovely." He added that the song gets very deep into the listener's consciousness "...because it's so peaceful. I suppose Ringo is writing cosmic songs these days without even realising it." It was the last song released by the Beatles featuring Starr on lead vocals.
Document 15: Something (Beatles song): "Something" is a song by the Beatles, written by George Harrison and released on the band's 1969 album "Abbey Road". It was also issued as a single coupled with another track from the album, "Come Together". "Something" was the first Harrison composition to appear as a Beatles A-side, and the only song written by him to top the US charts before the band's break-up in April 1970. The single was also one of the first Beatles singles to contain tracks already available on an LP album.
ground_truth: Maxwell's Silver Hammer