Question:
It's that their myriad, dubious, and overlapping roles keep piling up without ever being properly explained.

Does it follow that "Their roles are in no way shrouded or mysterious and are well explained."?
Answer:
no

Question:
There are two broad groupings of information systems control - general control and application control.

Does it follow that "There are 2 groupings of information systems control "?
Answer:
yes

Question:
I was glad to see highway speed limits increased to 65 miles per hour, even knowing the greater dangers of crashing.

Does it follow that "I was happy the speed limit raised on the roads I drive on."?
Answer:
it is not possible to tell

Question:
That's why the chief food technician in the leading dairy cooperative in the country was reclining behind a giant mixing vat and desperately wanted to forget about the negative stimuli on his nerve cells caused by the 83 kilograms of his body.

Does it follow that "The chief food technician wants to remember the positive stimuli that was caused from his body."?
Answer:
no