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