SN4 ""

No	Pattern	Freq
1	only [noun sg] was the	59
2	main [noun sg] was the	53
3	new [noun sg] was the	52
4	major [noun sg] was the	40
5	[adj] feature was the	38
6	important [noun sg] was the	34
7	[adj] problem was the	34
8	particular [noun sg] was the	32
9	political [noun sg] was the	32
10	other [noun sg] was the	28
11	[adj] factor was the	26
12	[adj] concern was the	24
13	[adj] development was the	22
14	final [noun sg] was the	21
15	real [noun sg] was the	20
16	principal [noun sg] was the	17
17	[adj] example was the	17
18	[adj] life was the	16
19	[adj] event was the	15
20	[adj] change was the	15
21	key [noun sg] was the	15
22	[adj] sound was the	15
23	[adj] policy was the	14
24	[adj] issue was the	14
25	social [noun sg] was the	14
26	[adj] period was the	14
27	[adj] thing was the	13
28	[adj] interest was the	13
29	human [noun sg] was the	13
30	central [noun sg] was the	12