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": ""}
  acetosella Pi4   `_,`x 146    7- RUMEX      POLYGONACEAE +<ab7  L. *U2J8     Y<xhl united states   1951-07-0/7   >        QDA DALE A. ZIMMERMAN T23N R7E !v    hTH Iosco
{"catalogNumber": "", "order": "", "family": "Polygonaceae", "scientificName": "", "scientificNameAuthorship": "L.", "genus": "Rumex", "subgenus": "", "specificEpithet": "acetosella", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Dale A. Zimmerman", "recordNumber": "146", "verbatimEventDate": "1951-07-07", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Iosco", "municipality": "", "locality": "T23N R7E", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}