input question: Abplanalp used plastic in a model that could be mass-produced , lowering the price per valve from 15 cents to 2 1 / 2 cents .
Mr. Abplanalp used plastic in a model that could be mass produced , lowering the price per valve , to 2 1 / 2 cents from 15 cents .
output answer: yes

input question: Wall Street regained a positive track yesterday after two of Saddam Hussein 's sons were killed in a firefight in Iraq .
WALL St regained a positive track today following news that two of Saddam Hussein 's sons were among four Iraqis killed in a US raid in northern Iraq .
output answer: yes

input question: The decades-long conflict has killed more than 10,000 people in the resource-rich province , most of them civilians .
More than 10,000 people , most of them civilians , have been killed in three decades of insurgency .
output answer: yes

input question: As you know , East Africa has been an area of terrorist threats and indeed terrorist attacks in the past . "
" East Africa has been an area of terrorist threats and indeed terrorist attacks in the past , " said State Department spokesman Philip Reeker .
output answer:
yes