We need to produce a JSON object with fields: seo_title, summary, key_entities, expert_faq, internal_link_anchor, primary_keyword, secondary_keywords, content_type.

We must follow instructions: summary must be 180-250 words total across exactly 3-4 paragraphs, each paragraph 45-65 words. Use bold formatting selectively (3-5 bolded terms across entire summary). Must not use banned words, etc. Must end with concrete statement, not forward-looking platitude.

We need to extract info from source: It's about rise of modern classic cars, focusing on cars from 1982-1988 qualifying for historic status in UK at 40 years old, exemptions, price growth, etc. Companies mentioned: Mercedes-Benz, Volkswagen, BMW, Bentley, Autotrader, Bonhams, maybe others like Jaguar, Ford. People: James Max (author), Roula Khalaf (Editor of FT), Erin Baker (Autotrader’s editorial director), Sir John Hegarty (founding partner of BBH). Locations: UK, Netherlands (Louwman Museum), maybe others.

We need to bold key details: maybe Mercedes-Benz SL, £110,000, 40-year historic vehicle exemption, Autotrader, Bonhams. Must be 3-5 bolded terms.

We must avoid banned words: list includes "additionally, align with, crucial, delve, emphasizing, enduring, enhance, fostering, garner, highlight, interplay, intricate, intricacies, key, landscape, pivotal, showcase, tapestry, testament, underscore, valuable, vibrant, nestled, groundbreaking, renowned, breathtaking, must-visit, stunning, profound, game-changer, robust, paradigm". Also banned filler phrases like "in order to", "due to the fact that", etc. Also banned closers like "the future looks bright", etc. Must avoid those.

We need to write in active voice, varied sentence starters, avoid starting many sentences with "The". Also avoid em dash overuse, etc.

We need to produce JSON with proper escaping for newlines inside summary string. Use \n\n for paragraph separation.

We need to ensure word count 180-250. Let's aim ~210 words.

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