Are there trains in front of the large tree?
No, there is a table in front of the tree.
    src        edge_attr  dst
0     0  to the right of    8
1     1        on top of    4
2     3           behind    4
3     4  to the right of   11
4     4      in front of    3
5     4      in front of   10
6     5  to the right of    6
7     6        on top of    2
8     6   to the left of    5
9     8   to the left of    0
10    8   to the left of   13
11   10   to the left of   12
12   10           behind    4
13   11   to the left of    4
14   12  to the right of   10
15   13  to the right of    8