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": ""}
    18.979 SK      -90.4399 V  Spreng. z-   MEXICO b(X6      CENCHRUS )8   POALES Ux+A@    ^& Cyrus L. Lundell  Los Rosales; TuxpeÃ±a       
{"catalogNumber": "", "order": "Poales", "family": "", "scientificName": "", "scientificNameAuthorship": "Spreng.", "genus": "Cenchrus", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Cyrus L. Lundell", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "", "municipality": "", "locality": "Los Rosales; Tuxpe\u00c3\u00b1a", "decimalLatitude": "18.979", "decimalLongitude": "-90.4399", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}