Bing Map w/ GeoJSON

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<!DOCTYPE html>
<html>
<head>
    <title></title>
    <meta charset="utf-8" />   
</head>
<body>
    <div id="myMap" style="position:relative;width:1200px;height:800px;"></div>
    <script type='text/javascript' 
            src='https://www.bing.com/api/maps/mapcontrol?callback=GetMap' 
            async defer></script>
    <script src="app.js" type='text/javascript'></script>
</body>
</html>
    