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 : A Rum Collins is a cocktail based on the Tom Collins substituting a light rum for the gin. 
Question : Which is the basis of Rum Collins?
based on

Context : In cryptography, the IDEA NXT algorithm (previously known as FOX) is a block cipher designed by Pascal Junod and Serge Vaudenay of EPFL (Lausanne, Switzerland). 
Question : Which is the basis of IDEA NXT?
based on

Context : Evil Clutch (also known as Il Bosco 1) is a 1988 Italian horror film written and directed by Andrea Marfori and distributed by Troma Entertainment. 
Question : The production company responsible for Evil Clutch is what?

production company