Is the glass full or empty?
The glass is empty.
    src        edge_attr  dst
0     0           behind    7
1     0   to the left of    6
2     0  to the right of    4
3     0   to the left of    8
4     1               on    2
5     2  to the right of    3
6     2           behind    3
7     2             near    3
8     3   to the left of    2
9     3          next to    2
10    3      in front of    2
11    3   to the left of    7
12    4   to the left of    0
13    4   to the left of    5
14    5  to the right of    4
15    5   to the left of    6
16    6  to the right of    7
17    6   to the left of    8
18    6  to the right of    5
19    6  to the right of    9
20    6  to the right of    0
21    7      in front of    0
22    7  to the right of    3
23    7   to the left of    6
24    8  to the right of    6
25    8  to the right of    9
26    8  to the right of    0
27    9   to the left of    8
28    9   to the left of    6