SN4 ""

No	Pattern	Freq
1	[noun] is that [noun] [prep]	119
2	[noun sg] is that [noun] [prep]	108
3	[pron] is that [noun] [prep]	56
4	[pers pn] is that [noun] [prep]	35
5	it is that [noun] [prep]	33
6	it is that [noun] [prep]	33
7	[adj] is that [noun] [prep]	23
8	[adv] is that [noun] [prep]	19
9	[det] is that [noun] [prep]	15
10	there is that [noun] [prep]	14
11	there is that [noun] [prep]	14
12	[ex0] is that [noun] [prep]	14
13	[adv] is that [noun] [prep]	13
14	[verb] is that [noun] [prep]	12
15	[coord] is that [noun] [prep]	7
16	[conj] is that [noun] [prep]	7
17	this is that [noun] [prep]	6
18	this is that [noun] [prep]	6
19	or is that [noun] [prep]	6
20	or is that [noun] [prep]	6
21	[noun pl] is that [noun] [prep]	6
22	[Wh adv] is that [noun] [prep]	5
23	[vb pp] is that [noun] [prep]	5
24	[Wh det] is that [noun] [prep]	5
25	what is that [noun] [prep]	5
26	so is that [noun] [prep]	5
27	so is that [noun] [prep]	5
28	what is that [noun] [prep]	5
29	[noun prp] is that [noun] [prep]	5
30	is [verb] that [noun] [prep]	54