<?xml version="1.0"?>
<svg xmlns="http://www.w3.org/2000/svg"
     xmlns:xlink="http://www.w3.org/1999/xlink">
<defs>
    <filter id="myfilter" filterUnits="objectBoundingBox" x="-10%" y="-10%" width="120%" height="120%">
        <feGaussianBlur stdDeviation="3"/>
    </filter>
</defs>
<text x="4" y="60" fill="green" filter="url(#myfilter)" font-size="55">This text should be blury.</text>
</svg>