ipt; runnable
            // Remove any old SVGs for re-running
            d3.select(graphElement).selectAll('*').remove();

            var sampleSVG = d3.select(graphElement)
                .append("svg")
                .attr("width", 100)
                .attr("height", 100);

            sampleSVG.append("circle")
                .style("stroke", "gray")
                .style("fill", "white")
                .attr("r", 40)
                .attr("cx", 50)
                .attr("cy", 50)
             