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": ""}
  Wd 1961-07-23    DKfb potentilla recta  42.4457 J    P recta  Livingston 52P   nz UNITED STATES       POTENTI1LA 931 wBq 7  1560142 U=S  Jarl K. Hiltunen  5=+J   IN DRY FIELD. SOIL: SAND. ASSOCIES: DAUCUS CROTA, BERTEROA INCANA, TRAGOPOGON DUBIUS, POA COMPRESSA. _n        F+ L.
{"catalogNumber": "1560142", "order": "", "family": "", "scientificName": "Potentilla recta", "scientificNameAuthorship": "L.", "genus": "Potentilla", "subgenus": "", "specificEpithet": "recta", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Jarl K. Hiltunen", "recordNumber": "931", "verbatimEventDate": "1961-07-23", "habitat": "In dry field. Soil: sand. Associes: Daucus carota, Berteroa incana, Tragopogon dubius, Poa compressa.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Livingston", "municipality": "", "locality": "", "decimalLatitude": "42.4457", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}