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": ""}
1993-05-20 XiW           271 _  CYPERACEAE ]W       4 .4 MI E ON OK 7 FROM ITS JCT WTH THE BLUE RIVER, E OF REAGAN.  lEav CAREX OPACA    z opaca     Z: ohnston   q^Iu  1381464 
{"catalogNumber": "1381464", "order": "", "family": "Cyperaceae", "scientificName": "Carex opaca", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "opaca", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1993-05-20", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Johnston", "municipality": "", "locality": "0.4 mi E on OK 7 from its jct with the Blue River, E of Reagan.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "271", "maximumElevationInMeters": ""}