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 follow constraints: summary 180-250 words, split into exactly 3-4 paragraphs separated by \n\n. Each paragraph 45-65 words. Must bold selectively using **.

We must not use banned words, etc.

We need to extract info from source: Brad Dalke, YouTube star, DP World Tour debut, BMW International Open, third round, 75 (three-over), seven strokes adrift of joint leaders Michael Hollick and Bernd Wiesberger at 13 under. Birdie on 18th hole. Support from fans, YouTube golf growing, 2.1 million subscribers, leaving channel to support wife health issues. Background: won Junior PGA Championship 2015, runner-up 2016 US Amateur, helped Oklahoma win NCAA Championship 2017, played Masters and US Open 2017, turned pro 2019, driver problems, switched to YouTube golf, part of Good Good group, announced leaving channel last week.

We must not add facts not in source. Use only provided.

We need to bold a few key details: maybe Brad Dalke, 2.1 million subscribers, BMW International Open, seven strokes adrift, Junior PGA Championship 2015. But only 3-5 total across entire summary. Let's pick maybe 4: Brad Dalke, 2.1 million subscribers, BMW International Open, seven strokes adrift.

We must not bold generic words. Ensure bold only those.

Now need to write 3-4 paragraphs each 45-65 words. Let's aim for 3 paragraphs, each about 55-60 words => total ~165-180 words. Need 180-250 words, maybe 4 paragraphs each ~55 words => 220 words.

Let's do 4 paragraphs, each 55 words => 220 words.

We need to count words. Let's craft.

Paragraph 1: Introduce Brad Dalke's DP World Tour debut at BMW International Open, his position after third round, score, gap to leaders.

Paragraph 2: Talk about fan support, YouTube following, his birdie on 18th, quote.

Paragraph 3: Background: amateur achievements, col