AI's Arctic land grab Wait: We must follow: Sentence case: capitalize only first word and proper nouns. The original "AI's Arctic Land Grab" would become "AI's arctic land grab" but proper nouns? "AI" is acronym; capitalize. "Arctic" is a region; proper noun? Arctic is proper noun; capitalized. "Land Grab" would be lowercase unless it's proper noun; but it's a phrase; per rule, only first word and proper nouns capitalized. So "AI's arctic land grab" would be first word AI's? If we start with "AI's", then "arctic" should be capitalized? Arctic is a proper noun, so "AI's Arctic land grab" Actually rule says capitalize ONLY the first word and proper nouns. If first word is "AI's" which includes acronym, is that considered a word? The first word is "AI's". It is not a proper noun by itself, but it's an acronym; it's a proper noun. So "AI's" should be capitalized as "AI's". The second word "Arctic" is a proper noun; should be capitalized. But rule says capitalize only first word and proper nouns. So if first word is "AI's" (a proper noun? it's a possessive form but still the first token), we would not capitalize every word; but "Arctic" is a proper noun, so capitalized. But "Land" is not a proper noun; not capitalized. "Grab" is not. So: "AI's Arctic land grab" Wait "Arctic" is proper noun, capitalized; "AI's" is as given capitalized; So "AI's Arctic land grab" That matches original capitalization? Original "Primary source headline: AI's Arctic Land Grab" had Capital L G. We need only first word and proper nouns capitalized; "Land" is not proper noun, so should be lowercase. But it is after "Arctic" which is proper. We must render: "AI's Arctic land grab" However "Arctic" is proper noun; "AI's" starts with acronym; is considered proper noun; so remains "AI's Arctic land grab". We'll output that. Ensure under 200 chars. Done. AI's Arctic land grab

Original headline: "AI's Arctic Land Grab"