How many students were responsible for the school shooting at Columbine?
2
2
4
2
3
4
2
3
4
5
2
3
1
4
5
2
3
1
4
5
2
3
1
4
5
2
3
1
4
5
2
3
1
4
5
2
3
1
0
4
6
5
2
3
1
4
0
6
5
2
3
7
1
4
6
5
2
3
7
0
1
4
6
5
2
3
7
1
0
4
6
5
2
3
7
1
4
9
0
6
5
2
3
7
1
4
9
6
5
2
3
7
0
1
8
4
9
13
6
5
2
3
7
1
8
0
4
9
13
6
5
2
3
7
1
8
4
9
0
13
6
5
2
3
7
1
8
10
4
666
9
12
13
6
5
2
3
7
0
1
8
10
4
14
9
12
13
6
5
317
3
7
1
8
10
0
666
14
9
12
11
13
6
5
7
313
1
8
10
14
16
9
12
0
11
13
6
5
666
7
1
417
217
8
313
10
315
14
16
9
12
11
6
175
7
366
0
517
317
666
8