_id	Capital	Question	Answer	Propn
1	1	6	14	0.3
2	1	6	15	0.3
3	1	7	16	0.3
4	1	7	17	0.3
5	1	7	18	0.3
6		9	21	0.7
7	2	11	26	0.1
8	2	13	30	0.01
9	2	15	34	0.1