Use Case 9: Find devices that can obtain certain physical samples.

The workflow is essentially similar to the first workflow given under Use Case 5, except that the scientist's target is samples for subsequent analyis rather than in-situ measurements. 

A mechanism is needed for adequately describing samples. For example, is it sufficient to use 'sediment sample' or do we need additional attributes such as 'sediment sample with undisturbed sediment/water interface?