[Q]: Tuition at four-year private colleges averaged $19,710 this year, up 6 percent from 2002.
For the current academic year, tuition at public colleges averaged $4,694, up almost $600 from the year before.

[A]: 2

[Q]: Mr Colpin did not specify whether it was this system that was at the centre of the investigation.
Neither OLAF nor the Belgian prosecutors have specified if it was this system that was at the centre of the investigation.

[A]: 2

[Q]: A woman is slicing butter.
A woman slices tofu.

[A]:
2