Is the couple that is talking standing by the train?
Yes, the couple is standing by the train.
    src        edge_attr  dst
0     0   to the left of    1
1     1   on the back of    3
2     1  to the right of   17
3     1  to the right of    0
4     2  to the right of   13
5     2      standing by    3
6     6       looking at    3
7     6               by    3
8     6          wearing    8
9     6   to the left of   10
10    9  to the right of   13
11   10               of    3
12   10  to the right of    6
13   10  to the right of   15
14   11  to the right of   14
15   13   to the left of   18
16   13   to the left of    2
17   13   to the left of    9
18   14   to the left of   11
19   15   to the left of   10
20   17          wearing    0
21   17   to the left of    1
22   18  to the right of   13