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": ""}
 M 1946   ?V NO DATA  x > bromus unioloides  kunth n   unioloides %Xru      _S? CONTACT UM HERBARIUM      u7/ Poaceae  C3 bromus Po4les 6    qH S.N.  H. Herre J  1704335   Y]   SOUTH AFRICA rVu/  
{"catalogNumber": "1704335", "order": "Poales", "family": "Poaceae", "scientificName": "Bromus unioloides", "scientificNameAuthorship": "Kunth", "genus": "Bromus", "subgenus": "", "specificEpithet": "unioloides", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "H. Herre", "recordNumber": "s.n.", "verbatimEventDate": "1946", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "South Africa", "stateProvince": "no data", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}