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

We must write a summary of 180-250 words total across 3-4 paragraphs, each paragraph 45-65 words, separated by double newline \n\n in the summary string. Must bold a few key details using double asterisks, 3-5 bolded terms total across entire summary. Must not bold generic words. Must end with concrete statement, not forward-looking platitude. Must vary sentence starters, active voice, avoid banned words, etc.

We have source: "A mega-famous popstar and a Super Bowl champion celebrated their love in Midtown Manhattan, announcing both their union and their cultural domination." That's 22 words. Must elaborate based on that, but not invent facts. Must not add external info. Must only use information directly from source or implied. The source only says they celebrated love in Midtown Manhattan, announcing union and cultural domination. So we can infer they are a popstar and Super Bowl champion, they got married? Actually "announcing both their union" suggests they announced marriage/engagement? Could be wedding. It says "Taylor Swift and Travis Kelce’s American Royal Wedding". So they are getting married. So we can write: They tied the knot in Midtown Manhattan, announcing marriage and cultural domination. Must not add specifics like venue, price, etc. Must not invent numbers. Must not add quotes. Must not add details not in source. But we can elaborate context: It's a high-profile celebrity wedding, merging music and sports, cultural domination. Must not add external facts like net worth, etc. Must be careful not to hallucinate. So we can say they announced their union, signifying merging of entertainment and sports, dominating culture. That's implied.

We need to bold 3-5 key details across entire summary. Could bold Taylor Swift, Travis Kelce, Midtown Manhattan, maybe cultural domination. T