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": ""}
 @ subsp.  j m gallatin   1439753 */2L   POLYGONACEAE -     dK$OI Joseph W. Blankinshi   z;a s.n.     UNITED STATES ibEo       `KKec aviculare    gGuc (Small) Cost7ea & Tardif  contact um her8arium U      /( BUXIFORME  h9  POLYGONUM
{"catalogNumber": "1439753", "order": "", "family": "Polygonaceae", "scientificName": "", "scientificNameAuthorship": "(Small) Costea & Tardif", "genus": "Polygonum", "subgenus": "", "specificEpithet": "aviculare", "verbatimTaxonRank": "subsp.", "infraspecificEpithet": "buxiforme", "identifiedBy": "", "recordedBy": "Joseph W. Blankinship", "recordNumber": "s.n.", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Gallatin", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}