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": ""}
   U RUMEX l. _5   `CV)+ Polygonaceae  michigan Wxmw    Sq/ acetosella  ,C CARYOPHYLL6ALES  1469580 # BD       uN rumex acetosella  DALE A. ZIMMERMAN      l3 COMMON ALONG ROAD THROUGH SANDY JACK PXINE SAVANNA.   b  146 1951-07-07 +21    g|6%6 Ios3co  UNITED STATES 7p 
{"catalogNumber": "1469580", "order": "Caryophyllales", "family": "Polygonaceae", "scientificName": "Rumex acetosella", "scientificNameAuthorship": "L.", "genus": "Rumex", "subgenus": "", "specificEpithet": "acetosella", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Dale A. Zimmerman", "recordNumber": "146", "verbatimEventDate": "1951-07-07", "habitat": "Common along road through sandy jack pine savanna.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Iosco", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}