Do the following sentences say the same thing?
They know that the video doesn't show a gas chamber.
The bottom line is that the video clip doesn't show a gas chamber.

5

Do the following sentences say the same thing?
Two dogs run side-by-side on the grass.
Two dogs running on grass.

4

Do the following sentences say the same thing?
Pistorius officer dropped from case
Pistorius officer on attempted murder charges

2

Do the following sentences say the same thing?
South Africa's Mandela taken to hospital
South Africa: Mandela remains in hospital
3