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": ""}
 a 1949-05-31 nicotiana F/HU$  solanales h B3     [eMw 61  Burnihat, Khasi Hills P!      _ NICOTIANA L. `r<    3F 1519476  I WASTE GROUND   F 22814 Ri-Bhoi *J   walter n. koelz Q!?q   SOLANACEAE N5        2 MEGHALAYA  q7 India 
{"catalogNumber": "1519476", "order": "Solanales", "family": "Solanaceae", "scientificName": "Nicotiana", "scientificNameAuthorship": "L.", "genus": "Nicotiana", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "22814", "verbatimEventDate": "1949-05-31", "habitat": "Waste ground", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "Meghalaya", "county": "Ri-Bhoi", "municipality": "", "locality": "Burnihat, Khasi Hills", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "61", "maximumElevationInMeters": ""}