Sentence examples for it only happen from inspiring English sources

Does it only happen in Guinness?

And why does it only happen to some athletes, performers, and students?

I feel sad for you but at a early age I have developed Parkinson's Disease and my doctors are in shook because I am only 46 years old and they told me that it only happen to people in their late 70s and only if it runs in the family but no one in my family has it and when I did the test it came back negative so the doctors can't tell if its really Parkinson of not.

So why did it only happen once?

Do you plan that or does it only happen when they say something?

It only happens in March.

It only happens in England".

It only happened once.

It only happened once in four years".

"It only happens every two years.

It only happens through design and dedication.