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": ""}
    4uH L.  LZ 1987-05-29 POALES +  a. a. reznicek 6>)  poaceae ~  CANADA ?BK   Poa ^      ONTARIO  `s   7909   dO 1422624   eS tivialis     1):/ Poa trivialis    MIDDLESEX K   Contact UM Herbarium A   
{"catalogNumber": "1422624", "order": "Poales", "family": "Poaceae", "scientificName": "Poa trivialis", "scientificNameAuthorship": "L.", "genus": "Poa", "subgenus": "", "specificEpithet": "trivialis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "A. A. Reznicek", "recordNumber": "7909", "verbatimEventDate": "1987-05-29", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "Middlesex", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}