Q: Those who only had surgery lived an average of 46 months .

For those who got surgery alone , median survival was 41 months .

Please tell me if the sentences above mean the same.
A: yes
Q: The Bluetooth SIG made its announcement at the Bluetooth World Congress in Amsterdam this week .

A new version of the Bluetooth specification was officially launched today at the start of the Bluetooth World Congress in Amsterdam .

Please tell me if the sentences above mean the same.
A: yes
Q: Fighting has continued sporadically in the west , where it is complicated by the presence of battle-hardened Liberians on both sides .

Both are in the cocoa-growing west of the world 's top producer in a region where fighting is complicated by the presence of Liberians on both sides .

Please tell me if the sentences above mean the same.
A:
no