Consider the following premises. If Patricia climbs a mountain, then it is overcast. Joseph is an office clerk or Patricia is climbing a mountain. Joseph is not an office clerk or David is working. If David works, then it is overcast. Michael is playing tennis and it is windy. Can we infer the following from them? Michael is not playing tennis.
 From the fact that Joseph is an office clerk or Patricia is climbing a mountain, and that Joseph is not an office clerk or David is working we can infer that Patricia is climbing a mountain or David is working. Finally, from the fact that Michael is playing tennis and it is windy we can infer that Michael is playing tennis, which contradicts that Michael is not playing tennis. Therefore, the answer is no.