{
    "hints":  [
                  {
                      "text":  "Fold the figure along the given line.",
                      "level":  1
                  },
                  {
                      "text":  "Are both sides exactly the same?",
                      "level":  2
                  },
                  {
                      "text":  "The two sides are not mirror images, so this is not a line of symmetry.",
                      "level":  3
                  }
              ]
}