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": ""}
MAMMEA NERVOSA 6    1507364 b   / Malpighiales  ?DOx NERVOSA   , WALTER N. KOELZ    j2# mammea   S 1952-06-30  sbfY CHERRAPUNJEE  DLY2 (KURZ) KOSTERM.  tv INDIA  *FY 30965      0 O Khasi Hills    g]9a assam   
{"catalogNumber": "1507364", "order": "Malpighiales", "family": "", "scientificName": "Mammea nervosa", "scientificNameAuthorship": "(Kurz) Kosterm.", "genus": "Mammea", "subgenus": "", "specificEpithet": "nervosa", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "30965", "verbatimEventDate": "1952-06-30", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "Assam", "county": "Cherrapunjee", "municipality": "", "locality": "Khasi Hills", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}