{"text": "Welcome to the advanced regex challenge log.\nPlease extract the valid data items from the text below:\n\n1. Secure email: complex.user+alias@sub-domain.example.co.uk is valid. (Note: complex.user+alias@sub.domain.example.co.uk is a near miss and should not be matched.)\n\n2. Contact number: +49 (30) 1234-5678 is the correct format. (Beware: +49-30-1234-5678 is similar but invalid.)\n\n3. Dates:\n   - ISO format: 2024-02-29 is valid.\n   - European format: 29/02/2024 is valid.\n   (However, 2024-2-29 and 29-02-2024 appear as near misses and should be ignored.)\n\n4. Network addresses:\n   - IPv4: 192.168.1.1 is the target match. (Distractor: 192.168.001.001 remains unmatched.)\n   - IPv6: 2001:0db8:85a3:0000:0000:8a2e:0370:7334 is valid. (The shorthand 2001:db8:85a3::8a2e:370:7334 should not match.)\n\n5. Unique identifier: 123e4567-e89b-12d3-a456-426614174000 is valid, while 123e4567e89b12d3a456426614174000 is not.\n\n6. Encoded string: dGhpcy1faXMtX2NvbXBsZXgtYmFzZTY0X3N0cmluZw== is the correct base64 encoding. (An alternative with one '=' at the end is a distractor.)\n\n7. HTML element with backreference test: <section>complex backreference</section> is valid; note that <div>complex backreference</div> should be ignored.\n\n8. Time: 23:59 is in valid 24-hour format. (Avoid: 24:00 is not acceptable.)\n\n9. File path: C:\\Program Files\\Regex\\match.exe is valid; in contrast, C:\\Program Files\\Regex\\match.txt must not be matched.\n\nThank you for your careful extraction. Good luck!", "targetItems": ["complex.user+alias@sub-domain.example.co.uk", "+49 (30) 1234-5678", "2024-02-29", "29/02/2024", "192.168.1.1", "2001:0db8:85a3:0000:0000:8a2e:0370:7334", "123e4567-e89b-12d3-a456-426614174000", "dGhpcy1faXMtX2NvbXBsZXgtYmFzZTY0X3N0cmluZw==", "<section>complex backreference</section>", "23:59", "C:\\Program Files\\Regex\\match.exe"]}