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": ""}
 2 MALVACEAE 1934-03-04 0i4QB    GREWIA KA0uQ     1506798  =   10 mi. above landhi k6(/^L  sindh n  walter n. koelz DV    GREWIA TENAX TY+  (forssk.)fiori PUO;(     `a<` Karachi  tenax ~%;    q!c Pakistan   o#:w malvales 7643 A   
{"catalogNumber": "1506798", "order": "Malvales", "family": "Malvaceae", "scientificName": "Grewia tenax", "scientificNameAuthorship": "(Forssk.) Fiori", "genus": "Grewia", "subgenus": "", "specificEpithet": "tenax", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "7643", "verbatimEventDate": "1934-03-04", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Pakistan", "stateProvince": "Sindh", "county": "Karachi", "municipality": "", "locality": "10 mi. above Landhi", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}