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": ""}
 @OaJ 1950-07-19     KEWEENAWP     CAREX BACKII `BW   ?^ Open, rocky ground. On summit of East Bluff. Xos    r~G -87.797889  7x 6F Charles D. Richard5   47.446571 iZ^=  3749  * |h~   1319942 YGM5S   [=y_ Poales  $ BACKII  Z=9Z6 carex   D Cyper4ceae    BOOTT united states x&(  Michigan ySM$   
{"catalogNumber": "1319942", "order": "Poales", "family": "Cyperaceae", "scientificName": "Carex backii", "scientificNameAuthorship": "Boott", "genus": "Carex", "subgenus": "", "specificEpithet": "backii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles D. Richards", "recordNumber": "3749", "verbatimEventDate": "1950-07-19", "habitat": "Open, rocky ground.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Keweenaw", "municipality": "", "locality": "On summit of East Bluff.", "decimalLatitude": "47.446571", "decimalLongitude": "-87.797889", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}