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": ""}
1939-02-20 !     H link     SG]P GUATEMALA    @# poales   XmR, 1137669  Kv` K c.d. adams          CJ tenuis  RHYNCHOSPORA Wl   Rhynchospora tenuis  n!b     Q paul c. standley
{"catalogNumber": "1137669", "order": "Poales", "family": "", "scientificName": "Rhynchospora tenuis", "scientificNameAuthorship": "Link", "genus": "Rhynchospora", "subgenus": "", "specificEpithet": "tenuis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "C.D. Adams", "recordedBy": "Paul C. Standley", "recordNumber": "", "verbatimEventDate": "1939-02-20", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Guatemala", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}