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": ""}
United States  o&    T$ HELIANTHUS GIG4NTEUS SUBSP. GIGANTEUS ann arbor ?  -  42.270872 o  xQ  ASTERALES /Lh06     S6 Asteraceae 1892-08-20 +/V      1254110 FY    0 WASHTENAW giganteus -V& I   `<y michigan   = giganteus   ; A.J. PIETERS   $&~x? -83.726329  subsp. f|     i ,E helianthus 
{"catalogNumber": "1254110", "order": "Asterales", "family": "Asteraceae", "scientificName": "Helianthus giganteus subsp. giganteus", "scientificNameAuthorship": "", "genus": "Helianthus", "subgenus": "", "specificEpithet": "giganteus", "verbatimTaxonRank": "subsp.", "infraspecificEpithet": "giganteus", "identifiedBy": "", "recordedBy": "A.J. Pieters", "recordNumber": "", "verbatimEventDate": "1892-08-20", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Washtenaw", "municipality": "", "locality": "Ann Arbor", "decimalLatitude": "42.270872", "decimalLongitude": "-83.726329", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}