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": ""}
   r&J6 GUANGDONG Tapu District k    m 21681    RHYNCHOSPORA FABERI 1 P    S^k? poales    ?B faberi      ,# rhynchospora cyperaceae @&     Vec c.b. carke 1716460 ,+2uj  TSANG W. T. ( -6o    cFj 1932-09-08   8S8)8 loam, silt, swamp, meadow China w&v7 
{"catalogNumber": "1716460", "order": "Poales", "family": "Cyperaceae", "scientificName": "Rhynchospora faberi", "scientificNameAuthorship": "C.B. Clarke", "genus": "Rhynchospora", "subgenus": "", "specificEpithet": "faberi", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Tsang W. T.", "recordNumber": "21681", "verbatimEventDate": "1932-09-08", "habitat": "Loam, silt, swamp, meadow", "occurrenceRemarks": "", "associatedTaxa": "", "country": "China", "stateProvince": "Guangdong", "county": "", "municipality": "", "locality": "Tapu District", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}