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": ""}
    Ciudad del Carmen; N side of Ciudad del Carmen Lt    * Roth   mexico 1T    7939 R K      !  18.6595 1136544 ;V     f D. WARD open sand and shell flat behind beach U   Fimbristylis fmXAn  d.b. ward Np     
{"catalogNumber": "1136544", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "Roth", "genus": "Fimbristylis", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "D.B. Ward", "recordedBy": "D. Ward", "recordNumber": "7939", "verbatimEventDate": "", "habitat": "Open sand and shell flat behind beach", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "", "municipality": "", "locality": "Ciudad del Carmen; N side of Ciudad del Carmen", "decimalLatitude": "18.6595", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}