{"text": "Here is the mixed content challenge: Our system logs various inputs. Emails observed include alpha.beta+gamma_delta@sub-domain.example.co.uk and \"quoted.email+test@sample-domain.edu\". Important dates are logged as 31/12/2023, 2023-12-31, and Dec 31, 2023, all representing the end of the year. For communications, call +1 (800) 555-0199 was made, and another record shows 800-555-0199 ext.123. Color codes like #A3F9B2 are sometimes used in design records. Our ID tags follow the format where the letter groups are identical, for instance, BB-456-BB. HTML content might contain entities such as &complexEntityName_123;, but note that similar sequences like NotValid&entity; should not be matched. Lastly, verify that spaced@example.com appears correctly, with no surrounding whitespace. End of record.", "targetItems": ["alpha.beta+gamma_delta@sub-domain.example.co.uk", "\"quoted.email+test@sample-domain.edu\"", "31/12/2023", "2023-12-31", "Dec 31, 2023", "+1 (800) 555-0199", "800-555-0199 ext.123", "#A3F9B2", "BB-456-BB", "&complexEntityName_123;", "spaced@example.com"]}