Passage 1: In a proposal about library collection debate, the writer argues that a library's plan to remove outdated books draws criticism from patrons. The writer connects the problem to the fact that the announcement emphasizes shelf space but does not explain how books are evaluated and warns that patrons worry that useful materials will disappear without review. The proposal recommends that leaders publish the selection criteria and invite comments before final decisions, while acknowledging that public comments may slow the timeline but can build trust. Passage 2: A second writer agrees that the problem deserves attention, but argues that the first response should be to collect clearer information about when and where the problem occurs. Only after that review, the second writer says, should leaders decide whether the proposed solution is the best use of limited resources. How do the two passages differ in their use of problem-and-solution structure?