Title: Birthday (Selena Gomez song)
Content:  "Birthday" was written by Crista Russo, with additional writing by Mike Del Rio and Jacob Kasher Hindlin, under his stage name "J. Kash". Production of the song was handled by Del Rio and Matt Beckley, who provided the song's vocal production. It was recorded at Conway Studios in Los Angeles, California, and was engineered by Jonathan Sher. Additional background vocals were done by Russo and Del Rio, while Serban Ghenea mixed the song at MixStar Studios in Virginia Beach, Virginia. John Hanes served as the engineer for mix, and Del Rio provided the song's programming and sequencing.
Title: Birthday (K. Michelle song)
Content:  "Birthday" was directed by Art by Child in, October 25, 2017.
Title: Birthday (1977 film)
Content:  Birthday (Ad günü) is a 1977 Azerbaijani musical film directed by Rasim Ojagov. The film plot is based on Rustam Ibrahimbeyov's short stories "Birthday" and "Business Trip".
Title: Birthday (2019 film)
Content: Sol Kyung-gu as Jung-il ; Jeon Do-yeon as Soon-nam ; Kim Bo-min as Ye-sol ; Yoon Chan-young as Su-ho ; Choi Hyeon-jin as young Su-ho ; Kim Soo-jin as Woo-chan's mother ; Lee Bong-ryun as Jung-sook ; Park Jong-hwan as Yeong-joon ; Kwon So-hyun as Eun-bin ; Sung Yu-bin as Seong-joon ; Bang Jae-ho as Birthday party boy ; Tang Joon-sang as Woo-chan ; Kim Gye-seon as Hyeong-woo's mother ; Sun Wook-hyun as Hyeong-woo's father ; Kim Hyun as Geon-jae's mother ; Shin Mun-sung as Geon-jae's father ; Kim Min-jae as Immigration officer 1 (special appearance) 
Title: The Birthday Party (1968 film)
Content:  The Birthday Party is a 1968 British drama neo noir directed by William Friedkin and starring Robert Shaw. It is based on the 1957 play The Birthday Party by Harold Pinter. The screenplay for the film was written by Pinter as well. The film, and the play, are considered examples of "comedy of menace", a genre associated with Pinter. The film was a passion project for Friedkin, who had been a fan of the play, and he remained proud of the film after its release, though it was a box office disappointment.
Title: Birthday (2019 film)
Content:  Birthday is a 2019 South Korean drama film directed by Lee Jong-un, starring Sol Kyung-gu and Jeon Do-yeon. The first South Korean film to explore the tragic sinking of the MV Sewol Ferry, it opened the 21st Far East Film Festival on 26 April 2019.
Title: My Birthday Song
Content:  My Birthday Song is a 2018 Bollywood psychological thriller film produced and directed by Samir Soni. The film stars the co-producer Sanjay Suri with Nora Fatehi, Zenia Starr and Ayaz Khan in supporting roles. The film revolves around a happily-married man and the song on his 40th birthday. It was released on 19 January 2018.
Title: Birthday (1977 film)
Content: Haji Ismayilov as Mustafa ; David Uplisashvili as Ali ; Yashar Nuri as Eldar ; Fuad Poladov as Nazim 
Title: Birthday (Katy Perry song)
Content: Marc Klasfeld – director ; Danny Lockwood – director ; Nicole Acacio – executive producer ; Dawn Rose – producer ; Joseph Robbins – director of photography ; Richard Alarcon – editor ; Tony Gardner – special effects, makeup and design ; Casey Storm – costume designer ; Lissa Hahn – set dresser ; TJ White – stunt coordinator ; Mark Neiman – special effects makeup ; Hugo Villasneor – special effects makeup ; Jake Bailey – Princess Mandee's makeup ; Olivia Segerstrom – wardrobe assistant ; Mary Beck – wardrobe assistant ; Ryan Cox – wardrobe assistant ; Harwood Lee – tailor ; Eric Holzer 
Title: Birthday (Katy Perry song)
Content:  The official music video for "Birthday" was directed by Marc Klasfeld and Danny Lockwood; Dawn Rose served as a producer, while Nicole Acacio served as executive producer, Richard Alarcón served as the editor, Tony Gardner as the make-up artist, and Joseph Robbins was the director of photography. For the video, which was filmed in April 2014, Perry played the characters of five party entertainers, appearing in five parties. This is similar to the British children’s TV series Gigglebiz consisting of the same format of cast as what Justin Fletcher did with characters in the show. They consisted of a burlesque-like elderly woman named Goldie, a Jewish master of ceremonies named Yosef Shulem, a clown named Kriss, an animal trainer named Ace, and a face-painter named Princess Mandee. In order to 

Question: Who was the screenwriter for Birthday?
Answer: Mere Smith.