What is on the stop sign?
The heart is on the stop sign.
    src        edge_attr  dst
0     0               on    6
1     2  to the right of    9
2     2  to the right of    7
3     3  to the right of    8
4     3  to the right of    6
5     4   to the left of    5
6     5               in    1
7     5  to the right of    4
8     5  to the right of   10
9     6   to the left of    3
10    6            below   11
11    6  to the right of    7
12    7   to the left of    9
13    7   to the left of    2
14    7   to the left of    8
15    7   to the left of    6
16    8   to the left of    3
17    8  to the right of    7
18    8  to the right of    9
19    9   to the left of    2
20    9  to the right of    7
21    9   to the left of    8
22   10   to the left of    5