Do you see a train that is red?
Yes, there is a train that is red.
    src        edge_attr  dst
0     0  to the right of    1
1     1   to the left of   10
2     1   to the left of    0
3     2   to the left of   10
4     2   to the left of    5
5     3  to the right of    4
6     4   to the left of    3
7     4  to the right of    7
8     5  to the right of    2
9     6   to the left of   10
10    7   to the left of    4
11    8   to the left of   10
12   10  to the right of    1
13   10  to the right of    2
14   10            above    3
15   10  to the right of    8
16   10  to the right of    6