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": ""}
1939-04-19 ?o     Fl9Pl Mississipp|      # POALES        cD]| (L.) PARODI poaceae ga4:l     M8|X 1420692 Along ocean-west of Biloxi   3B   rX+/ HARRISON    q.8F Piptochaetium avenaceum   `w AVENACEUM  agV w. a. silveus
{"catalogNumber": "1420692", "order": "Poales", "family": "Poaceae", "scientificName": "Piptochaetium avenaceum", "scientificNameAuthorship": "(L.) Parodi", "genus": "", "subgenus": "", "specificEpithet": "avenaceum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "W. A. Silveus", "recordNumber": "", "verbatimEventDate": "1939-04-19", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Mississippi", "county": "Harrison", "municipality": "", "locality": "Along ocean-west of Biloxi", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}