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": ""}
 W f4  21.3378 leucaena pulverulenta   .    I PULVERULENTA  f -99.3363  x; Benth.   X-Q mesa del sauz; 7 km al s de tancoyol, sobre el camino a landa   198-04-28 ?.h      z = ! LEUCAENA       tabaceae  jerzy rzedowski u/m    9 Fabales  iba2 mexico Jalpan de Serra  yf   
{"catalogNumber": "", "order": "Fabales", "family": "Fabaceae", "scientificName": "Leucaena pulverulenta", "scientificNameAuthorship": "Benth.", "genus": "Leucaena", "subgenus": "", "specificEpithet": "pulverulenta", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Jerzy Rzedowski", "recordNumber": "", "verbatimEventDate": "1987-04-28", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "Jalpan de Serra", "municipality": "", "locality": "Mesa del Sauz; 7 km al S de Tancoyol, sobre el camino a Landa", "decimalLatitude": "21.3378", "decimalLongitude": "-99.3363", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}