How tall is that cone?
The cone is tall.
    src        edge_attr  dst
0     0   to the left of    6
1     0  to the right of    4
2     0  to the right of    1
3     0   to the left of    5
4     1   to the left of    0
5     1   to the left of    6
6     1   to the left of    5
7     4          wearing    1
8     4   to the left of    5
9     4   to the left of    0
10    4   to the left of    6
11    5  to the right of    1
12    5  to the right of    0
13    5  to the right of    4
14    6  to the right of    0
15    6  to the right of    1
16    6  to the right of    4