Select the topic sentence from the paragraph below:
1In the late seventeenth century, a Turkish garrison was using the Parthenon for an ammunition storehouse. 2During an attack by the Venetians, a bomb ignited the gunpowder, blowing up the center section. 3Since then, the building has been a glorious ruin. 4Were it not for this relatively recent incident, the Parthenon would be standing intact today.
Sentence 1
Sentence 2
Sentence 3
Sentence 4
