1.   This was done by comparing the shorthand notes of several senior lobby members who willingly handed them over.

2.   This can be done by comparing the relative frequency of use of different coding categories in the potential risks and description conditions.

3.   The studies were done by comparing the skull size of Kennewick Man with that of all the known ethnic groups.

4.   This was being done by comparing statements made by leaders of the two parties, he said.