How to draw scatter chart with labels on google chart?

Look at this Google chart in spreadsheet.

How to draw this names on chart rather than tooltips? Is there need to change in data or options given to Google chart?

You can check this plunker.

var chart2 = {};
chart2.type = "ScatterChart";
chart2.cssStyle = "height:400px; width:500px;";
chart2.data = [
      ['Age', 'Weight'],
      [ {'v':8,'f':'Name 1'},      -12],
      [ {'v':-4,'f':'Name 2'},      5.5],
      [ {'v':11,'f':'Name 3'},     14],
      [ {'v':-4,'f':'Name 4'},      -5],
      [ {'v':3,'f':'Name 5'},      3.5],
      [ {'v':6.5,'f':'Name 6'},    -7]
    ];

chart2.options = {
    "title": "Age Vs Maturity",
    "isStacked": "true",
    "fill": 20,
    "hAxis": {"title": "Age", minValue: -15, maxValue: 15},
    "vAxis": {"title": "Maturity", minValue: -15, maxValue: 15},
    "legend": 'none'
};

$scope.chart2 = chart2;