The correct sentence is option two:
There have been many accidents during airshows; for example, last year the wind toppled a tent and equipment on top of bystanders.
The semicolon is a punctuation mark which indicates a pause, usually between two clauses that are not joined by a coordinating conjunction. Semicolons can also replace commas to separate elements in a list that already includes commas.
In the example sentence, the semicolon separates two clauses. Besides, a comma follows the introductory phrase "for example" because it introduces a clause.
The last time I tried doing something new was on the soccer field. I usually take a more offensive position but I’ve started taking more defensive approaches and I receive better results. I play much better as defence and I wouldn’t have known had I not experimented.
All human beings are born free and equal in dignity and rights. They are endowed with reason and conscience ad should act towards one another in a spirit of brotherhood.
Is there supposed to be a question I'm supposed to answer here?
