What is lying on the ground?
The mirror is lying on the ground.
    src        edge_attr  dst
0     2   to the left of   14
1     2   to the left of    5
2     4       walking on   15
3     4   to the left of   15
4     4     reflected in    8
5     5  to the right of    2
6     5  to the right of   14
7     5   to the left of   15
8     5  on the front of    4
9     8         lying on    0
10    8            below    4
11   14  to the right of    2
12   14   to the left of    5
13   15  to the right of    4
14   15  to the right of    5