We need to output a JSON object with fields: seo_title, summary, key_entities (companies, people, locations), expert_faq (question, answer), internal_link_anchor, primary_keyword, secondary_keywords, content_type.

We must write summary exactly 180-250 words, split into 3-4 paragraphs, each paragraph 45-65 words. Use bold formatting selectively (3-5 bolded terms total summary.

We need to base text: The headline: "GP: "Kimi Antonelli beats Lewis Hamilton to victory at Silverstone to extend world championship lead". The original text includes details: Kimi Antonelli passed pole-sitter Lewis Hamilton to extend his world championship lead with victory in the British Grand Prix Sprint. Ferrari's Hamilton held off Antonelli at the start but succumbed to near constant pressure from the Mercedes driver on the eighth circuit of the 17-lap contest, before the Italian teenager pulled clear to claim the first Sprint win of his Formula 1 career. Antonelli's championship lead over his Mercedes team-mate George Russell grows to 43 points, with the latter unable to get past McLaren's Lando Norris for third in the closing stages. Antonelli eventually finished 2.7 seconds clear of Hamilton, and the pair were in a league of their own, with a further seven-second gap back to Norris in third. Norris came out on top of a thrilling five-car battle for third, with Russell finishing ahead of Ferrari's Charles Leclerc, Red Bull's Max Verstappen and the other McLaren of Oscar Piastri, amid regular changes of position during the first half of the race. Racing Bulls' Liam Lawson held off Red Bull's Isack Hadjar to take the final point in eighth, but faces a post-race investigation after a questionable defensive move in the closing stages.

We need to include entities: companies: Mercedes, Ferrari, McLaren, Red Bull, Racing Bulls (maybe called Racing Bulls), maybe Sky Sports but it's a media source; but only entities mentioned in source. The source includes: Mercedes, Ferrari, McLaren, Red Bull