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": ""}
1517551 s4zB       b &@> KEWEENAW     # -87.87801 anton a. reznicek &2y.  Crataegus B2.  lindl.* P     one old tree with 5-6 main trunks, 3 other smaller shrubs nearby; voucher mnfi rBare plant survey 5Sp   9r Rosaceae         
{"catalogNumber": "1517551", "order": "", "family": "Rosaceae", "scientificName": "", "scientificNameAuthorship": "Lindl.", "genus": "Crataegus", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Anton A. Reznicek", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "One old tree with 5-6 main trunks, 3 other smaller shrubs nearby; voucher MNFI rare plant survey", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Keweenaw", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-87.87801", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}