What place could this be?
It is a cafeteria.
    src        edge_attr  dst
0     1   to the left of    6
1     1   to the left of    7
2     1   to the left of   13
3     1               in    4
4     2               in    4
5     2   to the left of    7
6     2   to the left of    6
7     3  to the right of   13
8     3   to the left of    9
9     3  to the right of   10
10    3  to the right of   16
11    3   to the left of   12
12    3               in    4
13    5  to the right of   15
14    6  to the right of    1
15    6  to the right of    2
16    7  to the right of   10
17    7   to the left of   11
18    7  to the right of    1
19    7  to the right of    2
20    9  to the right of    3
21   10   to the left of    3
22   10   to the left of    7
23   11  to the right of   15
24   11               in    4
25   11  to the right of   12
26   11  to the right of    7
27   12  to the right of   16
28   12   to the left of   11
29   12  to the right of    3
30   12  to the right of   13
31   13               in    4
32   13  to the right of    1
33   13   to the left of   12
34   13   to the left of    3
35   14               in    4
36   14  to the right of   15
37   15   to the left of   14
38   15   to the left of    5
39   15   to the left of   11
40   16               in    4
41   16   to the left of   12
42   16   to the left of    3