TASK DEFINITION: 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.
PROBLEM: Context : Cory Blackwell (born March 27, 1963) is an American former professional basketball player who was selected by the Seattle SuperSonics in the 2nd round (28th overall) of the 1984 NBA Draft. 
Question : On what team is Cory Blackwell?

SOLUTION: drafted by

PROBLEM: 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?

SOLUTION: based on

PROBLEM: Context : Terry Myerson, executive vice president of Microsoft's Windows and Devices Group, argued that the goal of this model was to reduce fragmentation across the Windows platform, as Microsoft aimed to have Windows 10 installed on at least one billion devices in the two to three years following its release. 
Question : The Windows 10 is based upon what?

SOLUTION:
based on