graph G {
    compound="true"
    rankdir="TB"
    bgcolor="white"
    fontname="Tahoma"

    node [
        fixedsize="false"
        fontname="Tahoma"
        color="white"
        fillcolor="deepskyblue2"
        fontcolor="black"
        shape="box"
        style="filled"
        penwidth="1.0"
    ]
    edge [
        fontname="Arial"
        color="#00688b"
        fontcolor="black"
        fontsize="12"
        arrowsize="0.5"
        penwidth="1.0"
    ]




    "textworld/envs" -- "textworld/generator" [label=" 7 ", penwidth="7", color="#00688bC9"];
    "textworld/envs" -- "textworld" [label=" 5 ", penwidth="5", color="#00688bA5"];
    "textworld" -- "textworld/generator" [label=" 4 ", penwidth="4", color="#00688b93"];
    "ROOT" -- "textworld/challenges" [label=" 2 ", penwidth="2", color="#00688b70"];

}