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": ""}
   4^^ 1286741  vulpia 1:    Mexico _F  MYUROS  .           w, y  1930-09-19  iz Poales POACEAE     v[W 919     SU myuros  y#ZL M. St. Pierre   +Cn*  vulpia myuros var. myuros 
{"catalogNumber": "1286741", "order": "Poales", "family": "Poaceae", "scientificName": "Vulpia myuros var. myuros", "scientificNameAuthorship": "", "genus": "Vulpia", "subgenus": "", "specificEpithet": "myuros", "verbatimTaxonRank": "", "infraspecificEpithet": "myuros", "identifiedBy": "", "recordedBy": "M. St. Pierre", "recordNumber": "919", "verbatimEventDate": "1930-09-19", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}