{"text":"Welcome to the Regex Gauntlet Challenge!\n\nIn this extremely tough challenge, precise pattern matching is paramount. Hidden among a sea of distractors are several valid items:\n\nValid Emails:\n1. complex.user+tag@sub.domain-example.co.uk\n2. user_name.123@abc.def-ghi.com\n3. o'reilly@example.org\n\nBeware of near-miss variants such as:\n- complex.user+tag@sub.domain_example.co.uk\n- user.name.123@abc.def-ghi.com\n- oreilly@example.org\n\nDates (various formats):\n- 29-02-2020       (target: dd-mm-yyyy leap day)\n- 2020/02/29       (target: yyyy/mm/dd)\n- 15.08.1947       (target: dd.mm.yyyy)\n\nDistractor Dates include:\n- 28-02-2020\n- 2020/2/29\n- 15-08-1947\n\nPhone Numbers (with nuances):\n- +1 (800) 555-0199 ext. 1234   (ta...(truncated)","targetItems":["complex.user+tag@sub.domain-example.co.uk","user_name.123@abc.def-ghi.com","o'reilly@example.org","29-02-2020","2020/02/29","15.08.1947","+1 (800) 555-0199 ext. 1234","0044-2079460958","ABC-123-ABC"]}