Q: The attack on the al-Rashid Hotel , during the visit of Deputy Defence Secretary Paul Wolfowitz underscores the nature of the problem .

The attack on the Rashid Hotel on Sunday , during the visit of the deputy secretary of defense , Paul D. Wolfowitz , underscores the nature of the problem .

Please tell me if the sentences above mean the same.
A: yes
Q: The tech-heavy Nasdaq Stock Markets composite index lost the most ground , falling 16.95 points to 1,506,76 .

The Nasdaq Composite Index lost 16.95 , or 1.1 percent , to 1507.76 , its first slide in five days .

Please tell me if the sentences above mean the same.
A: no
Q: The Prime Ministers of China , Russia and four central Asian nations have met in Beijing and approved a budget for their regional security grouping .

The prime ministers of China , Russia and four Central Asian countries signed agreements on Tuesday that set plans in motion for a long-awaited regional anti-terrorism centre in Uzbekistan .

Please tell me if the sentences above mean the same.
A:
yes