With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Samuel Witwer is a son.
text_B: Elena Siegman is an American singer , guitarist , songwriter and video game producer from Los Angeles .. Los Angeles. Los Angeles. She moved to Boston , and is the former lead guitarist and one of the founders of an all-girl punk band named Vagiant , now known as Tijuana Sweetheart .. Boston. Boston. Tijuana Sweetheart. Tijuana Sweetheart. As of January 2012 , she sings in the Boston-based rock band BrownBoot .. Boston. Boston. -LRB- Metal Bands -RRB-. In work for the video game developer Treyarch , she provided vocals for the soundtrack to the Nazi Zombies , or simply Zombies , game mode in the video games Call of Duty  : World at War -LRB- 2008 -RRB- , Call of Duty  : Black Ops -LRB- 2010 -RRB- , Call of Duty  : Black Ops II -LRB- 2012 -RRB- , and Call of Duty  : Black Ops III -LRB- 2015 -RRB- .. Treyarch. Treyarch. In 2011 , her music was released on the Call of Duty  : Black Ops - Zombies Soundtrack as part of the Rezurrection DLC pack , the fourth downloadable content pack for Call of Duty  : Black Ops .. downloadable content. downloadable content. Some remastered versions of songs from previous games and a new track from Call of Duty  : Black Ops II were released in 2013 on the Call of Duty  : Black Ops II Zombies - Origins Soundtrack along with the Origins map pack for Call of Duty  : Black Ops II .. The tracks featuring her vocals are -LRB- in chronological order -RRB-  : Lullaby of a Dead Man , The One and Beauty of Annihilation from Call of Duty  : World at War and Call of Duty  : Black Ops ; 115 , Abracadavre , Pareidolia and Coming Home from Call of Duty  : Black Ops ; Archangel from Call of Duty  : Black Ops II ; Dead Again and The Gift from Call of Duty  : Black Ops III .. All songs were written and produced by Kevin Sherwood , sound designer and composer at Treyarch .. Treyarch. Treyarch. She also provided vocals for the jingle of an item in the Zombies game mode called Juggernog Perk-a-Cola .. On 24 May 2011 , she released her debut solo album , The Mighty .. In 2014 she joined Bungie to work on the Destiny franchise as a producer .. Bungie. Bungie. Destiny. Destiny ( video game )
not_related.