Question: Both La'Porsha Renae and Trent Harmon performed on which television competition?

Context paragraphs:
Trent Harmon: Trenton William "Trent" Harmon (born October 8, 1990) is an American singer who gained national attention for winning the fifteenth and final season of the original run of "American Idol" on April 7, 2016.

Val Kahl: Val Kahl (born Valérie Kahl) is a French television host, radio host, journalist, and producer.  She is known in France as the winner of the Reality Television competition show "Le Grand Casting de la Télé" on NRJ12 network in 2010, a Reality TV Show looking for their next television host.

La'Porsha Renae: La'Porsha Renae Mays (born July 28, 1993) is an American singer from McComb, Mississippi.  In 2015, she auditioned for the fifteenth and final season of "American Idol".  On April 7, 2016, she finished as runner-up on the show, behind winner Trent Harmon.

Falling (Trent Harmon song): "Falling" is the debut single by "American Idol" season fifteen winner Trent Harmon and is also his coronation song from the contest.  It was co-written by singer songwriter and "American Idol" judge Keith Urban with Dallas Davidson and Brett James.  This song also failed to chart on the Billboard Hot 100 thus making it the second and the final American Idol coronation single to do so.

Dalton Rapattoni: Dalton Louis Rapattoni (born February 6, 1996) is an American singer from Dallas, Texas.  In 2015, he auditioned for the fifteenth season of "American Idol".  On April 6, 2016, he finished the show in third place, behind La'Porsha Renae and Trent Harmon.

American Idol (season 15): The fifteenth season of "American Idol", also branded as American Idol: The Farewell Season, premiered on the Fox television network on January 6, 2016.  Ryan Seacrest continued as the show's host, while Jennifer Lopez, Keith Urban, and Harry Connick, Jr. returned as judges.  This season was four to six weeks shorter than seasons 2 through 14.  On April 7, Trent Harmon was announced as the season's winner and La'Porsha Renae was the runner-up.  Harmon was the third consecutive winner to never be in the bottom two or three, and the eighth male winner in nine years.

Battles (La'Porsha Renae song): "Battles" is the debut single by "American Idol" season fifteen runner-up La'Porsha Renae and would have been her coronation song had she won the contest.

American Idol: American Idol is an American singing competition television series created by Simon Fuller, produced by FremantleMedia North America and 19 Entertainment, and distributed by FremantleMedia North America.  It began airing on Fox on June 11, 2002, and ended its first-run on April 7, 2016.  In 2018, the show will make its debut on ABC.  It started off as an addition to the "Idols" format based on the British series "Pop Idol", and became one of the most successful shows in the history of American television.  The concept of the series involves discovering recording stars from unsigned singing talents, with the winner determined by the viewers in America through telephones, Internet, and SMS text voting.  Winners chosen by viewers in its fifteen seasons were Kelly Clarkson, Ruben Studdard, Fantasia, Carrie Underwood, Taylor Hicks, Jordin Sparks, David Cook, Kris Allen, Lee DeWyze, Scotty McCreery, Phillip Phillips, Candice Glover, Caleb Johnson, Nick Fradiani, and Trent Harmon.

Porsha Williams: Porsha Dyanne Williams (born June 22, 1981), also known by her former married name Porsha Stewart, is an American television personality, model, actress and singer.  Born and raised in Atlanta, Georgia, she modeled for music videos and calendar spreads in her early adulthood.  In 2011, she came to prominence after marrying football player Kordell Stewart in an elaborate ceremony broadcast on the television series "Platinum Weddings", although they experienced a widely publicized divorce in 2013.  In 2012, Williams was cast in the fifth season of the reality television series "The Real Housewives of Atlanta".  In 2014, she launched a career in the music industry with the launch of her single "Flatline" under the record label Kandi Koated Entertainment.  Williams was a contestant on the eighth installment of the reality competition series, "The Celebrity Apprentice", now known as "The New Celebrity Apprentice".  She played for the charity "Hosea".  On January 23, 2017, she was the eighth contestant fired, finishing in 8th place and raising no money for her charity.

There's a Girl: "There's a Girl" is the song by "American Idol" season fifteen winner Trent Harmon and is also his first single since his winner's single from "Idol".  The song was written by Harmon, Jimmy Robbins, and Laura Veltz, and was produced by Robbins.

Supporting paragraphs: La'Porsha Renae Trent Harmon
Answer: American Idol