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": ""}
  x Poaceae  a2:U1 SEPULVEDA BLVD. AT LOS ANGELES RIVER  Hf%1] LOS ANGELES 1874 XkW<f   UNITED STAT3S a _/    kC l.   n phalaris Poales w   GW Phalaris paradoxa    california B   PARADOXA 2  1933-06-24 Nq] r  Louis C. Wheeler 9       1420353 t8J  
{"catalogNumber": "1420353", "order": "Poales", "family": "Poaceae", "scientificName": "Phalaris paradoxa", "scientificNameAuthorship": "L.", "genus": "Phalaris", "subgenus": "", "specificEpithet": "paradoxa", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Louis C. Wheeler", "recordNumber": "1874", "verbatimEventDate": "1933-06-24", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "California", "county": "Los Angeles", "municipality": "", "locality": "Sepulveda Blvd. at Los Angeles River", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}