We need to produce JSON with fields. Word count 180-250. Paragraphs 3-4, each 45-65 words. Let's aim for 4 paragraphs of about 55 words each => total ~220 words. Need to count words precisely.

Paragraph 1: Introduce session, mention Hamilton fastest, key fact. Let's draft ~55 words.

"Lewis Hamilton topped the only practice session at Silverstone, setting a time 0.213 seconds faster than championship leader Kimi Antonelli, while Charles Leclerc edged out Mercedes' George Russell. The seven-time British Grand Prix winner, now a Ferrari driver, surprised many with his pace on a day when 500,000 spectators were expected to fill the circuit."

Count words: Let's count.

Lewis(1) Hamilton(2) topped(3) the(4) only(5) practice(6) session(7) at(8) Silverstone,(9) setting(10) a(11) time(12) 0.213(13) seconds(14) faster(15) than(16) championship(17) leader(18) Kimi(19) Antonelli,(20) while(21) Charles(22) Leclerc(23) edged(24) out(25) Mercedes'(26) George(27) Russell.(28) The(29) seven-time(30) British(31) Grand(32) Prix(33) winner,(34) now(35) a(36) Ferrari(37) driver,(38) surprised(39) many(40) with(41) his(42) pace(43) on(44) a(45) day(46) when(47) 500,000(48) spectators(49) were(50) expected(51) to(52) fill(53) the(54) circuit.(55)

55 words. Good.

Paragraph 2: Mention other drivers, McLaren spin, Verstappen struggle, context. Need 45-65 words.

"Oscar Piastri recorded fifth place but lost 0.887 seconds, after a spin at Becketts, while Max Verstappen lagged 0.980 seconds behind Hamilton, indicating grip issues. Lando Norris and Isack Hadjar followed, completing a top‑ten order that saw Sauber’s Nico Hulkenberg and Racing Bulls’ Liam Lawson rounding out the list."

Count.

Oscar(1) Piastri(2) recorded(3) fifth(4) place(5) but(6) lost(7) 0.887(8) seconds,(9) after(10) a(11) spin(12) at(13) Becketts,(14) while(15) Max(16) Verstappen(17) lagged(18) 0.980(19) seconds(20) behind(21) Hamilton,(22) indicating(23) grip(24) issues.(25) Lando(26) Norris(27) and(28) Isack(29) Hadja