Consider the following premises. If Charles were rich, then Barbara is playing a game. If Jessica plays squash, then Barbara is playing a game. Jessica is playing squash or Charles is rich. If Patricia were an electrician, then Barbara is not playing a game. Can we infer the following from them? Patricia is an electrician.
 From the fact that if Jessica plays squash, then Barbara is playing a game, that if Charles were rich, then Barbara is playing a game, and that Jessica is playing squash or Charles is rich we can infer that Barbara is playing a game. Finally, from the fact that if Patricia were an electrician, then Barbara is not playing a game, and that Barbara is playing a game we can infer that Patricia is not an electrician, which contradicts that Patricia is an electrician. Therefore, the answer is no.