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": ""}
    oZ b4 CAREX OBTUSATA   ^ Lilj.  ~ ,  7485   gxI SASKATCHEWAN  raI canada   Carex   t      ADk obtusata   GEORGE F. LEDINGHAM  C      1 poales    jm FORT WALSH, WEST BLOCK OF CYPRESS HILLS. 1143 / 
{"catalogNumber": "", "order": "Poales", "family": "", "scientificName": "Carex obtusata", "scientificNameAuthorship": "Lilj.", "genus": "Carex", "subgenus": "", "specificEpithet": "obtusata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "George F. Ledingham", "recordNumber": "7485", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "Saskatchewan", "county": "", "municipality": "", "locality": "Fort Walsh, west block of Cypress Hills.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "1143", "maximumElevationInMeters": ""}