Q: Doctors have speculated that the body 's own estrogen protects against cell damage and improves blood flow . -- Their belief was based on speculation that estrogen prevents cell damage and improves blood flow . --
A: " yes "

Q: Acting Police Chief Francisco Ortiz said the explosion was being treated as a criminal matter , but no possibility had been ruled out . -- Acting New Haven Police Chief Francisco Ortiz said police were treating the explosion as a criminal matter . --
A: " no "

Q: The Securities and Exchange Commission yesterday said companies trading on the biggest U.S. markets must win shareholder approval before granting stock options and other stock-based compensation plans to corporate executives . -- Companies trading on the biggest stock markets must get shareholder approval before granting stock options and other equity compensation under rules cleared yesterday by the Securities and Exchange Commission . --
A: " yes "

Q: The United States accuses Saddam loyalists of attacks on oilfields and pipelines crucial to Iraq 's economic recovery . -- Loyalists are also believed to be behind attacks on oil pipelines and fields that are crucial to Iraq 's economic recovery . --
A:
" yes "