Is that grass tall?
No, the grass is short.
    src        edge_attr  dst
0     1   to the left of    4
1     1  to the right of    9
2     2   to the left of    5
3     3  to the right of    4
4     3           riding    5
5     4  to the right of    9
6     4  to the right of    1
7     4   to the left of    7
8     4   to the left of    3
9     5  to the right of    2
10    5  to the right of    9
11    7  to the right of    4
12    9      approaching    5
13    9   to the left of    5
14    9   to the left of    4
15    9   to the left of    1