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