Use documents you're cleared to share, say where the decision boundary is, and ask for sources in the answer.
Prepare a policy options brief
“Using the policy, implementation reports, consultation responses and legislation I've provided, prepare an options brief on [issue]. Separate the current legal position, what implementation shows, stakeholder positions, costs stated in the record, and open questions. Cite every material claim, and don't recommend an option until the evidence table is complete.”
Set out a procurement review
“Read the solicitation, the published evaluation criteria and the bids I've provided. Build a comparison table that quotes or cites the evidence each bidder gives for each criterion, and marks anything missing or unclear. Give no score and draw no conclusion the documents don't support. The evaluation decision belongs to the appointed committee.”
Summarise public submissions
“Analyse these consultation submissions. Identify the distinct positions, the evidence behind each, who is putting them forward, the important minority views, and proposals that are answering different versions of the problem. Link every theme back to the original submissions, and don't treat how often a view appears as proof that it's right.”
Rebuild a programme's history
“Rebuild the history of [programme] from the approved documents I've attached. Give me a dated timeline of decisions, budgets, procurement, changes to delivery, reported results and reviews. Cite the source for each event, and separate official decisions from later accounts of what happened.”