Consider the following premises. If Thomas were a musician, then Sarah is an office clerk. Sarah is an office clerk if and only if Patricia is excited. Thomas is a musician or Mary is not bored. Patricia is not excited. Can we infer the following from them? Mary is bored.
 From the fact that Sarah is an office clerk if and only if Patricia is excited, and that Patricia is not excited we can infer that Sarah is not an office clerk. From the fact that Thomas is a musician or Mary is not bored we can infer that if Mary were bored, then Thomas is a musician. From the fact that if Thomas were a musician, then Sarah is an office clerk, and that Sarah is not an office clerk we can infer that Thomas is not a musician. Finally, from the fact that if Mary were bored, then Thomas is a musician, and that Thomas is not a musician we can infer that Mary is not bored, which contradicts that Mary is bored. Therefore, the answer is no.