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": ""}
   E Contact UM Herbarium 1950-07-10 5 Fa  1184700 q    - ZX: Potentilla thurberi rosaceae  q      s ? thurberi    6a&H james h. maysilles    29C ROSALES 7382 :~       1K%/k MEXICO    6Y a. gray   Z0F3 Potentilla
{"catalogNumber": "1184700", "order": "Rosales", "family": "Rosaceae", "scientificName": "Potentilla thurberi", "scientificNameAuthorship": "A. Gray", "genus": "Potentilla", "subgenus": "", "specificEpithet": "thurberi", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "James H. Maysilles", "recordNumber": "7382", "verbatimEventDate": "1950-07-10", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}