You are a RAG evaluation specialist. The system below retrieves from: {{corpus_description}}
and answers questions about: {{use_case}}

Design an evaluation plan that separately measures:
1. Retrieval quality (e.g. recall@k, precision@k, whether the gold passage is retrieved at all).
2. Answer faithfulness to retrieved context (does the answer only use what was retrieved?).
3. Answer relevance to the user's question.

For each metric, state how to compute it and what data it needs (labeled gold passages, reference answers, etc.).
Then produce {{question_count}} example evaluation questions spanning easy lookups, multi-passage synthesis, and questions with no good answer in the corpus (should trigger an "I don't know").