SN4 ""

No	Pattern	Freq
1	[noun] is [adv] that	358
2	[noun sg] is [adv] [that]	311
3	[noun] is [adv] [that]	243
4	[noun] is not [that]	108
5	[noun] is [not/n't] [that]	108
6	[noun] is not [that]	106
7	[noun] is simply [that]	47
8	[noun] is simply [that]	47
9	point is [adv] [that]	31
10	point is [adv] [that]	31
11	[noun pl] is [adv] [that]	30
12	problem is [adv] [that]	20
13	problem is [adv] [that]	20
14	[noun] is so [that]	16
15	[noun] is so [that]	16
16	[noun] is there [that]	14
17	[noun prp] is [adv] [that]	14
18	[noun] is there [that]	14
19	[noun] is precisely [that]	13
20	[noun] is precisely [that]	13
21	reason is [adv] [that]	11
22	reason is [adv] [that]	11
23	answer is [adv] [that]	10
24	[noun] is perhaps [that]	10
25	[noun] is perhaps [that]	10
26	answer is [adv] [that]	10
27	[noun] is probably [that]	9
28	[noun] is probably [that]	9
29	[noun] is therefore [that]	8
30	[noun] is merely [that]	8