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": ""}
 1492670 aPk0:   dioscorea oppositifoliay [  east khasi hills 2   wYgV walter n. koelz  K.:-p Dioscoreaceae    Climbing in thicket pb#  L. P.    1219 ]U!)0    o  Dioscoreales  tl g INDIA        b DIOSCOREA  .~]Ig oppositifolia  @l3b 33618 1952-04-16 ( 
{"catalogNumber": "1492670", "order": "Dioscoreales", "family": "Dioscoreaceae", "scientificName": "Dioscorea oppositifolia", "scientificNameAuthorship": "L.", "genus": "Dioscorea", "subgenus": "", "specificEpithet": "oppositifolia", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "33618", "verbatimEventDate": "1952-04-16", "habitat": "Climbing in thicket", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "", "county": "East Khasi Hills", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "1219", "maximumElevationInMeters": ""}