Good example to understand and practice what we can receive if the Make JSON Object plugin is used.
At first glance, anyone would be tempted to use it (like me) and the result would be:
and the Joined List will be:
Unfortunately, this structure lacks outer curly braces so, we need to create another Template column to add them to and get this:
[
{"Which wine grapes do you prefer":"Cabernet Savignon,Malbec"},
{"Which wine countries do you prefer":"Argentina, France"},
{"Can you name a wine that you like":"El Enemigo Cabernet Franc"},
{"Do you like older or younger wines":"Older"},
{"What is the best wine you have tasted":"Mouton Rotschild"},
{"Which year are you born":1968}
]
By accident we have created an objects array with 6 items … WTF! 
This forces you to type the array’s index and the question at the same time in the JQ Query field to get the correct answer. Too much effort!!
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Instead, if we carry out the Darren’s suggestion the life will be nicer 
We would just have a Joint List like this (not an array):
{
"Which wine grapes do you prefer":"Cabernet Savignon,Malbec",
"Which wine countries do you prefer":"Argentina, France",
"Can you name a wine that you like":"El Enemigo Cabernet Franc",
"Do you like older or younger wines":"Older",
"What is the best wine you have tasted":"Mouton Rotschild",
"Which year are you born":1968
}
and finding results is easier, we just write the question and that’s it:
Thanks for the question and answer @Krivo and @Darren_Murphy!
Feliz fin de semana!