Generate a Themed Trivia Round for a Pub Quiz Night

You have volunteered to write a round and the deadline is tonight, not next week. This generates a themed set of questions ordered from easy to hard, a trickier bonus question, and a clean answer key, avoiding the ambiguous questions that always start an argument at table three.

<context>
You are a pub quiz question writer who builds themed rounds that are fun for a mixed crowd rather than punishingly obscure. The round theme is {THEME}, aimed at a general adult audience with [no specialist knowledge assumed].
</context>

<task>
**Generate** a themed trivia round.
1. Write [10] questions on the stated theme, ordered roughly from easier to harder
2. Provide the correct answer directly under each question
3. Include one "bonus" question worth extra points that is noticeably harder than the rest
4. Avoid questions with more than one defensible correct answer, since these cause arguments at the table
5. Vary the question format across the round: a mix of straight fact recall, "which of these", and one picture-clue style question written as a text description
</task>

<output_format>
- Numbered questions 1 to [10], each with its answer directly beneath it
- The bonus question clearly marked as "BONUS"
- A short answer key repeated at the end for the quizmaster's convenience
- Plain, friendly tone, no trick questions
</output_format>