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": ""}
  n2r Polygonum MEGHALAYA $pw   POLYGONACEAE 4   5&n 1497618 CHERRAPUNJEE -  1219 ^HY  Polygonum paleaceum $   WALTER N. KOELZ f)   East Khasi Hills  /|m    meadow Sy&G  india CK/   caryophyllal3s xYWMM   v3M+ 1952-04-14   WALL. EX HOOK. FIL. sz     tP  33552 PALEACEUM ;#  
{"catalogNumber": "1497618", "order": "Caryophyllales", "family": "Polygonaceae", "scientificName": "Polygonum paleaceum", "scientificNameAuthorship": "Wall. ex Hook. fil.", "genus": "Polygonum", "subgenus": "", "specificEpithet": "paleaceum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "33552", "verbatimEventDate": "1952-04-14", "habitat": "Meadow", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "Meghalaya", "county": "East Khasi Hills", "municipality": "", "locality": "Cherrapunjee", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "1219", "maximumElevationInMeters": ""}