Question: Which awards did the writer of Baby Blue win in 1973? 

Context paragraphs:
Baby Blue (Action Bronson song): "Baby Blue" is a song by American rapper Action Bronson.  It was released on March 3, 2015 as the fourth and final single off his second album "Mr. Wonderful" (2015).  It features a guest appearance from fellow rapper Chance the Rapper.  It was co-written by both artists, along with Zane Lowe (who co-wrote the chorus) and Mark Ronson, who also produced the song.  A hip hop breakup song, "Baby Blue" is the closer to a three-part suite along with "City Boy Blues" and "A Light in the Addict" that's preluded by the album's interlude, "Thug Love Story 2017 The Musical".

Baby Blue (Badfinger song): "Baby Blue" is a song recorded by the band Badfinger for inclusion on their 1971 album, "Straight Up."  The song was written by Pete Ham, produced by Todd Rundgren, and released on Apple Records.  It regained fame four decades later upon being featured in the series finale of AMC's "Breaking Bad", which uses the track's title lyric as a reference to the special and iconic blue methamphetamine produced by main character Walter White.

Paul Thompson (playwright): Paul Thompson O.C. (born May 4, 1940 in Charlottetown, Prince Edward Island) is a Canadian playwright and theatre director.  Best known for his term as artistic director of Theatre Passe Muraille in Toronto, Ontario from 1970 to 1982, Thompson was known for pioneering techniques of collective creation, in which actors, playwrights and directors would collaborate on the creation of a play through field research and acting improvisations.  Plays on which Thompson was credited as a primary or collaborating writer during this era included "Doukhobors" (1970), "The Farm Show" (1972), "1837: The Farmers' Revolt" (1973, with Rick Salutin), "I Love You, Baby Blue" (1975), "Far As the Eye Can See" (1977, with Rudy Wiebe) and "Maggie and Pierre" (1980, with Linda Griffiths).

It's All Over Now, Baby Blue: "It's All Over Now, Baby Blue" is a song written and performed by Bob Dylan and featured on his "Bringing It All Back Home" album, released on March 22, 1965 by Columbia Records ("see" 1965 in music).  The song was recorded on January 15, 1965 with Dylan's acoustic guitar and harmonica and William E. Lee's bass guitar the only instrumentation.  The lyrics were heavily influenced by Symbolist poetry and bid farewell to the titular "Baby Blue."  There has been much speculation about the real life identity of "Baby Blue", with possibilites including Joan Baez, David Blue, Paul Clayton, Dylan's folk music audience, and even Dylan himself.

Pete Ham: Peter William Ham (27 April 1947 – 24 April 1975) was a Welsh singer, songwriter and guitarist, best known as the lead vocalist/composer of the 1970s rock band Badfinger whose hit songs include "No Matter What", "Day After Day" and "Baby Blue."  He also co-wrote the ballad "Without You", a worldwide Number One hit for Harry Nilsson and it has become a standard song as covered by hundreds of artists consistently throughout the years since.  Ham was granted two Ivor Novello Awards related to the song in 1973.

Nemophila phacelioides: Nemophila phacelioides is a flowering forb native to Texas, Oklahoma, Louisiana, and Alabama.  The plant has medium-sized blue or purple flowers, and is an annual plant.  The flower is known commonly as baby blue eyes, Texas baby blue eyes, largeflower baby blue eyes, or flannel breeches.

Private Party Collectors Edition: Private Party Collectors Edition is the debut compilation album of Canadian DJ group, Baby Blue Soundcrew, released on December 5, 2000.  The album features 24 popular urban songs of 2000, including five original songs by Baby Blue Soundcrew.  In Canada, the album was just shy of platinum status, selling just under 100,000 copies.

Baby Blue (rapper): Baby Blue is an English rapper and singer from London, England.  She is known for her work with singer Estelle and collaborations with John Legend, Madness, Sway, Shystie, Ms. Dynamite and Lady Sovereign.  Baby Blue has a sound that fuses hip hop with grime, R&B and soul.

Pretty Ricky: Pretty Ricky is an American R&B/hip hop group originated from Miami, Florida.  Pretty Ricky originally consisted of two brothers: Ala Diamond "Baby Blue" Smith, "Spectacular" Blue Smith, cousin Corey "Slick em" Mathis and Family friend Marcus "Pleasure P" Cooper who is the group's only singer since the rest of them take roles as rappers.  brothers: Ala Diamond "Baby Blue" Smith, "Spectacular" Blue Smith have the same father, Joseph "Blue" Smith Sr., and the same mother.

Blue (Phil Keaggy album): Blue is a 1994 album by guitarist Phil Keaggy, released on Epic Records.  "Blue" was released in the mainstream market simultaneously with Keaggy's album, "Crimson and Blue", which was geared to the Christian market.  The most significant differences are the inclusion of three different songs (Keaggy's cover of the Badfinger song, "Baby Blue"; "All Our Wishes"; and "The Further Adventures of..." from the "Revelator" EP) and the exclusion of five songs from "Crimson and Blue" ("Love Divine," "Reunion Of Friends," "Stone Eyes," "I Will Be There," and "Nothing But The Blood.")  In addition, several of the tracks on "Blue" are reworked.

Supporting paragraphs: Pete Ham Baby Blue (Badfinger song)
Answer: two Ivor Novello Awards