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": ""}
   52451 <   Sutton a,p_V         dZ/@ aristida      24 airline miles sovth-southeast of Sonora b4      1946-10 -04  4/*    k>C adscensionis  ^ T FREQUENT ON SHOULD^ER OF OLD GRADED ROAD IN VERY SHALLOW SOIL ON FLAT LIMESTONE
{"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "Aristida", "subgenus": "", "specificEpithet": "adscensionis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "52451", "verbatimEventDate": "1946-10-04", "habitat": "frequent on shoulder of old graded road in very shallow soil on flat limestone", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Sutton", "municipality": "", "locality": "24 airline miles south-southeast of Sonora", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}