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": ""}
 u 1923-12-02  E. L. Ekman ZT 7       ,< microcarpa  &7u) RHYNCHOSPO4RA     5VmF 1137377  ?k CUBA  BALDWIN X A. GRAY a   $]yP CONTACT UM HERBARIUM     Ss cyperaceae 18262 nu73      rhynchospora microcarpa M._^   5X POALES
{"catalogNumber": "1137377", "order": "Poales", "family": "Cyperaceae", "scientificName": "Rhynchospora microcarpa", "scientificNameAuthorship": "Baldwin ex A. Gray", "genus": "Rhynchospora", "subgenus": "", "specificEpithet": "microcarpa", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "E. L. Ekman", "recordNumber": "18262", "verbatimEventDate": "1923-12-02", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Cuba", "stateProvince": "", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}