How do I extract data from this api ? -Wikipedia viewer

JavaScript
1

here’s the sample code

Example JSON

How do i extract value from it

like this?

  $.getJSON("www.someurl.com/" + searchString + "w/", function (obj) {
            var arr1 = [];
            arr1 = obj[1];  // or obj.["1"] or any other methods?
            console.log(arr1[0]);
        });