What is the tallest building in the city that was attacked first on September 11, 2001?
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The September 11 attacks were an example of a suicide attack.
The September 11 attack was an example of a suicide attack .
What is the tallest building in the city that was attacked first on September 11, 2001?</s>The September 11 attacks were an example of a [unused1]suicide attack                [unused2] .
What is the tallest building in the city that was attacked first on September 11, 2001?</s>The September 11 attacks were an example of a suicide attack.
What is the tallest building in the city that was attacked first on September 11, 2001?</s>The September 11 attack was an example of a [unused1]suicide attack                [unused2] .
What is the tallest building in the city that was attacked first on September 11, 2001?</s>The September 11 attack was an example of a suicide attack .
What is the tallest building in the city that was attacked first on September 11, 2001?</s>September 11 attacks,0,September 11 attacks,September 11 attacks,instance of,[unused1]suicide attack[unused2],[unused1]suicide attack[unused2],0,September 11 attacks,[unused1]suicide attack[unused2],0,[unused1]suicide attack[unused2]
What is the tallest building in the city that was attacked first on September 11, 2001?</s>September 11 attacks,0,September 11 attacks,September 11 attacks,instance of,suicide attack,suicide attack,0,September 11 attacks,suicide attack,0,suicide attack