How big is the glass that looks empty?
The glass is small.
    src        edge_attr  dst
0     0  to the right of   30
1     0   to the left of   22
2     1  to the right of   26
3     1               on   24
4     2  to the right of    9
5     2  to the right of    8
6     2  to the right of    7
7     3  to the right of   15
8     3  to the right of    4
9     4   to the left of    3
10    6   to the left of   28
11    7   to the left of    2
12    7   to the left of   28
13    7   to the left of   27
14    7   to the left of   10
15    8   to the left of   28
16    8   to the left of   10
17    8   to the left of    2
18    8   to the left of   27
19    9   to the left of    2
20    9   to the left of   10
21    9   to the left of   28
22    9   to the left of   27
23   10  to the right of    9
24   10  to the right of    7
25   10  to the right of    8
26   10   to the left of   31
27   11  to the right of   12
28   11  to the right of   20
29   12   to the left of   18
30   12   to the left of   22
31   12   to the left of   11
32   14               in   13
33   15   to the left of    3
34   16               on   25
35   17  to the right of   30
36   18               on   23
37   18  to the right of   12
38   18   to the left of   22
39   19   to the left of   22
40   20   to the left of   11
41   21       sitting on    0
42   21   to the left of   22
43   22  to the right of   21
44   22  to the right of   19
45   22  to the right of    0
46   22  to the right of   18
47   22  to the right of   12
48   22               on   25
49   26   to the left of    1
50   27  to the right of    8
51   27  to the right of    7
52   27  to the right of    9
53   28  to the right of    6
54   28  to the right of    9
55   28  to the right of    8
56   28  to the right of    7
57   30   to the left of   17
58   30   to the left of    0
59   31  to the right of   10