{
    "hints":  [
                  {
                      "text":  "Look for a fold line that makes both sides identical.",
                      "level":  1
                  },
                  {
                      "text":  "If you cannot find any such line, the figure is not symmetric.",
                      "level":  2
                  },
                  {
                      "text":  "No line divides this shape into two matching halves, so it is not symmetric.",
                      "level":  3
                  }
              ]
}