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": ""}
DENSE FLOATING LAYER ON SMALL POND NEAR RIVER, IN SUN & SHADE F+ vj    united sta73s  @Pn6    CUS TER TWP., SECTION 19  u  MASON Y     ALISMATALES  5niV   Q)i5D Wolffia borealis  -86.27675 ]      k &fe ANTON A. REZNICEK    1514302 ,>   ~<q@H michigan   Nv a (ENELM.) LANDOLT & WILDI EX GANDHI, WIERSEMA & BROUILLET  
{"catalogNumber": "1514302", "order": "Alismatales", "family": "", "scientificName": "Wolffia borealis", "scientificNameAuthorship": "(Engelm.) Landolt & Wildi ex Gandhi, Wiersema & Brouillet", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Anton A. Reznicek", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "dense floating layer on small pond near river, in sun & shade", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Mason", "municipality": "", "locality": "Custer Twp., Section 19", "decimalLatitude": "", "decimalLongitude": "-86.27675", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}