Classify the relation of question with context to one of these categories: 1) award received, 2) based on, collection, 3) conflict, 4) constellation, 5) convicted of, 6) date of death, 7) director, 8) drafted by, 9) educated at, 10) medical condition, 11) military branch, 12) narrative location, 13) occupation, 14) original network, 15) parent company, 16) point in time, 17) production company, 18) residence, 19) series, 20) service entry, 21) sex or gender, 22) spouse, 23) standards body question.

Context : ``Cha-Ka'' is the first episode of the first season of the 1974 American television series Land of the Lost. 
Question : What is the series that Cha-Ka is a part of?
series

Context : Lionel Pickens (December 4, 1983 -- May 17, 2015), better known by his stage name Chinx (formerly Chinx Drugz), was an American rapper from Queens, New York. 
Question : What city is Chinx from?
residence

Context : In terms of its place in the development of the canon of science fiction, it has been noted that City of Illusions combines the sensibility of traditional British Science Fiction, images from American genre Science Fiction and anthropological ideas. 
Question : To which series does City of Illusions belong?

series