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.

Example input: Context : Isaac Nicola Romero (1916 in Havana, Cuba -- 1997) was a prominent Cuban guitarist and one of the founders of the modern Cuban Guitar School. 
Question : What was Isaac Nicola's city of birth?
Example output: place of birth
Example explanation: The question is about the place of birth of the Isaac Nicola. Hence the output is relevant and valid
Q: Context : As dated in The Continent Makers and Other Tales of the Viagens and the 1959 version of de Camp's essay ``The Krishna Stories,'' the action of ``The Continent Makers'' takes place in the year 2153 AD., placing it after ``The Colorful Character'', and making it the third Viagens story set on Earth in terms of chronology. 
Question : What series is The Continent Makers from?
A:
series