1.   By a happy coincidence, James was also in town that weekend.

2.   It was just a happy coincidence that he was there too.

3.   It was simply a happy coincidence that it sounded like an insult!

4.   This is either some magic geometry of which I know nothing or it is a happy coincidence.

5.   Viable recycling depends on a happy coincidence of materials costs, labour costs and technology.

6.   It was a happy coincidence that Robert arrived at the same time.

7.   By happy coincidence, Robert met Richard and Julia and discovered they were experiencing similar problems.

8.   By happy coincidence, this is the very threshold beyond which the sum of the Fairway parts would violate New York City zoning laws for a manufacturing district.

9.   Call it a happy coincidence.

10.   By happy coincidence, the Republicans gathered in the very city that gave birth to the idea of the White Anglo-Saxon Protestant.