Do the following sentences say the same thing?
Shares of Guidant plummeted in trading both on and off the New York Stock Exchange before a news halt was imposed after midday.
Shares of Guidant were down 5.3 percent at $40.92 in afternoon trading on the New York Stock Exchange.

3

Do the following sentences say the same thing?
"This has been a persistent problem that has not been solved," investigation board member Steven Wallace said.
"This was a persistent problem which has not been solved, mechanically and physically," said board member Steven Wallace.

4

Do the following sentences say the same thing?
A man is cutting tomatoes into pieces.
A woman is cutting potatoes.

2

Do the following sentences say the same thing?
Chinese News Agency Slams Delays in Search for Jet
Ten Chinese vessels on standby for jet search
3