How big are the tall trees?
The trees are large.
    src        edge_attr  dst
0     1  to the right of   11
1     1  to the right of    6
2     2             near   16
3     3             near   14
4     5               on   12
5     5   to the left of   12
6     6         drinking   14
7     6   to the left of    1
8     8               in    2
9     8               on   14
10    9             near   14
11    9               in   14
12    9         drinking   14
13    9           eating   16
14   11               in   14
15   11   to the left of    1
16   11           eating   16
17   12  to the right of    5
18   14             near    9
19   14             near    3
20   16             near    2