What is the cake lying on?
The cake is lying on the tray.
    src        edge_attr  dst
0     0   to the left of    8
1     0  to the right of    6
2     1  to the right of    8
3     2         lying on    7
4     2     displayed on    7
5     3  to the right of    4
6     4   to the left of    3
7     5   to the left of    6
8     6  to the right of    5
9     6   to the left of    0
10    8  to the right of    0
11    8   to the left of    1