Question

"a company is developing an expert system. it has assembled the participants in its expert systems. taylor has extensive knowledge on the subject. mary is experienced in the design, development, implementation, and maintenance of an expert system. joe will use and benefit from the system. what is mary's role

Answer 1

Mary's role is that of a knowledge engineer.
A knowledge engineer is tasked with integrating certain knowledge into computer (in this case expert) systems, with the aim to solve very difficult problems that otherwise people would not be able to solve on their own.