Is there either any tan sand or grass?
No, there is grass but it is green.
    src        edge_attr  dst
0     0               of    2
1     0  to the right of   17
2     0   to the left of    7
3     0  to the right of    4
4     0  to the right of   16
..  ...              ...  ...
93   17   to the left of    8
94   17   to the left of    7
95   17   to the left of   10
96   17   to the left of   13
97   18               by   12

[98 rows x 3 columns]