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": ""}
poales :  1939-05-21 $9      United States W.y  4018  9    gnkL POA PRATENSIS    clearings wooded hill |    +eA poa 1422190  s_WZ  pratensis 3g    POACEAE m,NdQ  Robert Bebb W      [z ARKANSAS SEARCY -hE  
{"catalogNumber": "1422190", "order": "Poales", "family": "Poaceae", "scientificName": "Poa pratensis", "scientificNameAuthorship": "", "genus": "Poa", "subgenus": "", "specificEpithet": "pratensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Robert Bebb", "recordNumber": "4018", "verbatimEventDate": "1939-05-21", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Arkansas", "county": "Searcy", "municipality": "", "locality": "Clearings wooded hill", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}