Anchor: However, they said that such measurements would be difficult because it is costly to do the research and recordkeeping necessary to develop information on (1) the full cost of controls--both the initial cost and operational inefficiencies associated with the controls--and (2) the full cost of incidents or problems resulting from inadequate controls.
Entailed: They said that these measurements are costly because of the research and record keeping expenses.  
Contradiction: Research and record keeping is so cheap that it makes the measurements cost effective.  
Contradiction: Nobody has a jacket.
Contradiction: The men are at a concert.
Contradiction: This health insurance policy will also insure your home.
Contradiction: martial arts demonstration