How many United States presidents have been assassinated?
4
2
4
2
4
2
4
3
2
4
3
2
4
3
2
4
3
2
4
3
2
4
3
2
4
5
3
1
2
4
5
3
1
2
4
5
3
1
2
4
5
3
1
2
4
5
3
1
2
4
5
3
1
2
4
5
3
0
1
2
4
5
3
7
1
0
2
4
6
5
3
7
1
2
4
6
0
5
3
7
1
2
4
6
5
3
7
0
1
2
4
6
5
3
7
1
0
6
5
3
7
1
6
0
5
3
7
1
8
6
5
7
1
8
6
5
7
1
9
8
6
5
7
1
9
13
8
6
5
7
11
1
9
13
8
6
5
7
11
1
9
13
8
6
5
7
11
1
9
13
8
6
7
11
9
13
8
6
7
11
9
13
8
6
7
11
9
13
8
6
7
11
9
13
8
6
7
11
9
13
8
Four
10
6
7
11
14
9
13
8
Four
10
6
7
11
12
14
9
13
8
Four