In the English Grammar Profile, B2 Point 4 in the category of FOCUS is defined as
‘The reason (that)’, ‘The place (which)’ + clause as subject + ‘be’ for focus.
Expert examples:
TLC female Hong Kong B1
PELIC STUDENT:
Arabic Male level 5 grammar class.
*although the verb ‘be’ is probably the most common, for complexity, we should also accept any verb after the clause.
Here are some google news examples:
Hindustan TimesThe reason that less number of workers were paid relief is that a large number of registered workers don’t renew their registrations, and many have not paid their yearly registration fees, the official said.
ExplicaThe place, which is managed by the SSD Concerts company, promises to follow all measures of social distancing, from the parking lot to the toilets and observation decks.
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A search NOW corpus for examples for:
. The reason|place * _V
1 . THE REASON WE PROVIDE 4629
2 . THE REASON IT’S 335
3 . THE REASON I’M 330
4 . THE REASON WE HAVE 281
2 . THE REASON IT’S 335
3 . THE REASON I’M 330
4 . THE REASON WE HAVE 281
5 . THE REASON WHY IS 280
6 . THE REASON I SAY 275
7 . THE REASON WE ARE 248
7 . THE REASON WE ARE 248
8 . THE REASON GIVEN WAS 247
9 . THE REASON THIS IS 229
10 . THE REASON I AM 198
10 . THE REASON I AM 198
A similar point is point 73 in CLAUSES that are relative, but are at B1 and defined as:
defining relative clauses, ‘the person who/that, the thing that, the (only) one who/that’ as a focusing device.