The Bidding Room: Series 5

Season overview

Role: Meticulous television and film archivist.
Goal: Produce a JSON object for "The Bidding Room" Season 5.
Constraints:
Use ONLY provided SYNOPSIS and SOURCES.
No invented titles, names, dates, counts, awards, ratings, etc.
If a detail is missing, omit it.
Output: Valid JSON only (no markdown, no asterisks, no headings, no bullet points).
JSON keys: overview (160-220 words), primer (array of exactly 4 concise bullet points).
Input Data:
Synopsis: "Sellers come face to face with five dealers who battle it out to make the highest bid."
Source 1: Nigel Havers welcomes people with an item they'd like to sell, introducing them to a valuation expert who gives them the specialist information they need to drive [cut off].
Source 3: Cast includes Nigel Havers and Simon Bower.
Season 5 specific info: The prompt asks for Season 5, but the provided synopsis and sources do not mention "Season 5" specifically. They describe the general premise of the show (2020).
Overview content: Sellers bring items to sell. Nigel Havers welcomes them. A valuation expert provides specialist information. Five dealers compete to make the highest bid.
Primer content: Need 4 points about previous lore/stakes.
Problem: The sources do not provide "previous lore," "character positions," or "stakes" for Season 5 specifically, nor do they describe what happened in Seasons 1-4.
Constraint Check: "If a detail is not in the provided material, you omit it rather than guess." "Do not invent plot events or spoilers."
Word Count Check for Overview: The synopsis provided is extremely brief. I need to expand it to 160-220 words using only the provided facts.
Fact 1: Nigel Havers welcomes people with an item they would like to sell.
Fact 2: A valuation expert provides specialist information to help drive the process.
Fact 3: Sellers face five dealers.
Fact 4: Dealers battle to make the highest bid.
Wait, if I only have these facts, I cannot reach 160-220 words without repeating myself or inventing details. The instructions say "Write original, neutral, encyclopedic prose... Do not invent... If a detail is not in the provided material, you omit it rather than guess."
If the provided