Refactor the unstructured text into a valid JSON dictionary. The key names follow the Darwin Core Archive Standard. If a key lacks content, then insert an empty string. Fill in the following JSON structure as required: {"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}
OLD FIELDS Nm   qzv~ tennessee  $ trifolium         ?3%6 1504239 fabales B=7;|  s.n. q >m   Albert Ruth 88hy    8uDe trifolium arvense UNITED ST4TES n   GRPM 42475 Anhz   ARVENSE gC#j9   a^= KNOXVILLE  L. B|G   g ap knox 1892-06-25 N|o 
{"catalogNumber": "1504239", "order": "Fabales", "family": "", "scientificName": "Trifolium arvense", "scientificNameAuthorship": "L.", "genus": "Trifolium", "subgenus": "", "specificEpithet": "arvense", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Albert Ruth", "recordNumber": "s.n.", "verbatimEventDate": "1892-06-25", "habitat": "Old fields", "occurrenceRemarks": "GRPM 42475", "associatedTaxa": "", "country": "United States", "stateProvince": "Tennessee", "county": "Knox", "municipality": "", "locality": "Knoxville", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}