SN4 ""

No	Pattern	Freq
1	[noun] is that [pron]	5182
2	[noun sg] is that [pron]	4213
3	[verb] is that [pron]	819
4	[noun pl] is that [pron]	721
5	[adj] is that [pron]	644
6	[pron] is that [pron]	523
7	[pers pn] is that [pron]	400
8	it is that [pron]	268
9	it is that [pron]	268
10	[adj] is that [pron]	257
11	[det] is that [pron]	237
12	[adv] is that [pron]	218
13	[noun prp] is that [pron]	213
14	thing is that [pron]	193
15	problem is that [pron]	191
16	[vb infin] is that [pron]	188
17	thing is that [pron]	185
18	[adv] is that [pron]	184
19	problem is that [pron]	174
20	say is that [pron]	168
21	[to-vb] is that [pron]	137
22	[vb base] is that [pron]	136
23	[v-ing] is that [pron]	134
24	point is that [pron]	131
25	[vb pp] is that [pron]	127
26	point is that [pron]	127
27	answer is that [pron]	127
28	answer is that [pron]	125
29	this is that [pron]	118
30	this is that [pron]	118