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": ""}
   -on 1941-05-04  Poaceae L   1741 xNH    &ubr CALIFORNIA 1406220 I t)       t OS FATUA    POALES 6Av^    #Fq  avena   j?%O alan a. beetle  ALAMEDA a  Contact UM Herbarium /   Q-2 avena fatua  
{"catalogNumber": "1406220", "order": "Poales", "family": "Poaceae", "scientificName": "Avena fatua", "scientificNameAuthorship": "", "genus": "Avena", "subgenus": "", "specificEpithet": "fatua", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Alan A. Beetle", "recordNumber": "1741", "verbatimEventDate": "1941-05-04", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "California", "county": "Alameda", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}