I have one variable varX defined in Regular Expression Extractor in some previous HTTP sampler. But now I need to define second variable varY so that in post request I have varY = ${${varX}}.
To make things more clear:

varX can have values Fruit, Car, City. Each of these three values need to be also variable and values for these three variables I will define in .csv file like this:

Fruit Car City
orange BMW Los Angeles
banana Mercedes New York
apple Honda Washington

I thought that best way to do this would be to use some pre processor. Can you please advice?