Parsing a heading with each set of data

[sedhha]

Here is my data to be rendered in Venn Diagram:

{
                                sets:["Selected "+el,"Total "+el],
                                size:selectedTotals[ind],
                                label: "C",
                                // I want something like title: "Diagram 1"
                            }

I want to give a title to each of the Venn Diagram elements I pass in. So that instead of looking like this:

It should look something like this:

Does anyone know how to do that?