How many books written by a president has won a Pulitzer award?
1
1
1
1
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
4
1
3
2
4
1
3
2
4
3
2
5
4
0
3
2
5
4
3
2
0
5
4
3
5
0
4
3
7
5
4
0
3
7
5
4
3
0
7
5
4
3
7
5
0
4
3
7
5
4
0
3
7
5
4
3
0
6
7
5
4
3
One
6
7
5
0
4
3
One
6
7
5
4
0
One
8
6
7
5
4
One
8
6
7
5
4
One
8
6
7
5
4
One
8
6
7
5
4
One
8
6
7
5
One
8
6
9
7
5
One
8
No
6
9
7
5
One
8
No
6
9
7
10
One
8
No
6
9
7
13
10
One
8
No
6
9
7
13
10
One
8
No
6
9
7
13
10
One
8
11
No
6
9
13
10
One
8
11
No
6
9