Using angular to turn a multi-dimensional array into a multi list

js` and I would like to repeat an array into a list

From this: This is in the Service:

var Response= [
        ["Article One"],
        ["Article Two"],
        ["Article Three"],
        ["Article Images", ["Images 1", "Images 2", "Images 3"] ],
        ["Article Five"]
    ];

And calling the Object from the Controller:

$scope.Response = function () {
        return ArtikelSucheService.Response;
    };

I want to repeat it like this:

<ul ng-repeat="Article in Response()">
        <li>Article One</li>
        <li>Article Two</li>
        <li>Article Three</li>
        <li>Images 
            <ul ng-repeat="What must stay here?">
                <li>Images 1</li>
                <li>Images 2</li>
                <li>Images 3</li>
            </ul>
        </li>
        <li>Article Five</li>
   </ul>

I don't know, how can I repeat an array in an array. Response is an array. And in Response there are x images. 1 article can have many images.

Can anybody help me out?

var Response1= [
        ["Article One"],
        ["Article Two"],
        ["Article Three"],
        ["Article Images", ["Images 1", "Images 2", "Images 3"] ],
        ["Article Five"]
];

and in html use below template

<ul>
  <li ng-repeat='option in responses1'>
      {{option[0]}}
      <ul>
      <li ng-repeat='suboption in option[1]'>{{suboption}}</li>
    </ul>
      </li>
    </ul>

working fiddle http://jsfiddle.net/jw5Qf/1/

May be like following?

<ul>
  <li ng-repeat="Article in Response()">
    {{ Article[0] }}
    <ul ng-show="Article[1]">
      <li ng-repeat="img in Article[1]">{{ img }}</li>
    </ul>
  </li>
</ul>