Please capitalize where necessary: this is not merely a coincidence.
A: This is not merely a coincidence.

Please capitalize where necessary: this room has views of the garden and arthur's seat.
A: This room has views of the garden and Arthur's Seat.

Please capitalize where necessary: - safety designed insulated bnc connector
A: - Safety designed insulated BNC connector

Please capitalize where necessary: paying some nominal amount for entry without a tour escort, we went into the yard. 2 years ago it was worth a few hryvnia (3-5, can not remember exactly).
A:
Paying some nominal amount for entry without a tour escort, we went into the yard. 2 years ago it was worth a few hryvnia (3-5, can not remember exactly).