Consider the following premises. If Sarah were a police officer, then it is sunny. For all x_7, x_7 will make tea if and only if x_7 will climb a mountain. It is not sunny. If Richard climbs a mountain, then Sarah is a police officer. Can we infer the following from them? Richard is making tea.
 From the fact that if Sarah were a police officer, then it is sunny, and that it is not sunny we can infer that Sarah is not a police officer. From the fact that for all x_7, x_7 will make tea if and only if x_7 will climb a mountain we can infer that Richard is making tea if and only if Richard is climbing a mountain. From the fact that if Richard climbs a mountain, then Sarah is a police officer, and that Sarah is not a police officer we can infer that Richard is not climbing a mountain. Finally, from the fact that Richard is making tea if and only if Richard is climbing a mountain, and that Richard is not climbing a mountain we can infer that Richard is not making tea, which contradicts that Richard is making tea. Therefore, the answer is no.