Here are two sentences:

Energy prices dropped by 8.6 percent , the biggest decline since July 1986 .

Excluding food and energy prices , the PPI fell 0.9 per cent , the biggest drop since August 1993 .

no

Here are two sentences:

Mr. Stevens has also told his officers that information from British intelligence indicates there are more al Qaeda agents in Britain than previously thought .

Sir John has also told his officers that information from British intelligence indicates there are more al-Qa 'eda agents in Britain than previously thought .

yes

Here are two sentences:

Palestinian Prime Minister Mahmoud Abbas told Palestinian Satellite TV the helicopter strike was a " terrorist attack . "

Palestinian Prime Minister Mahmoud Abbas denounced the helicopter strike as a " criminal and terrorist " Israeli attack .
yes