Text: The central security manager told us that she considered the tests, which could be performed inexpensively by her staff, a cost-effective way to evaluate this important aspect of security and provide a service to the academic departments, which were ultimately responsible for the security of their departments' information and operations.
Entailment: The tests have been regarded as a cost-effective way of evaluating this aspect of security.
Contradiction: The central security manager rejected the tests, claiming that they were too expensive and complex.