Who wears the mask?
The catcher wears a mask.
    src        edge_attr  dst
0     0  to the right of    3
1     0   to the left of    9
2     0   to the left of    2
3     2  to the right of   15
4     2  to the right of    0
5     2  to the right of    4
6     2          wearing    6
7     2          holding    7
8     3          wearing    5
9     3          wearing   13
10    3   to the left of    0
11    3   to the left of    4
12    3   to the left of   15
13    4          wearing    0
14    4          wearing   15
15    4  to the right of    5
16    4  to the right of    3
17    4   to the left of    9
18    4   to the left of    2
19    4   to the left of   11
20    5   to the left of    4
21    9  to the right of    0
22    9  to the right of    4
23    9  to the right of   15
24   11  to the right of    4
25   15   to the left of    9
26   15  to the right of    3
27   15   to the left of    2