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