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": ""}
42.72723    violaceae c  D         AMH? ONTARIO  arvens|s zd   Harvey E. Ballard, Jr. $    EWc VIOLA ARVENSIS    P6uj 1986-08-09      CNa $ Murray      nD^ 42 43.63 n, 80 22.48 w 
{"catalogNumber": "", "order": "", "family": "Violaceae", "scientificName": "Viola arvensis", "scientificNameAuthorship": "Murray", "genus": "", "subgenus": "", "specificEpithet": "arvensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Harvey E. Ballard, Jr.", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1986-08-09", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Ontario", "county": "", "municipality": "", "locality": "", "decimalLatitude": "42.72723", "decimalLongitude": "", "verbatimCoordinates": "42 43.63 N, 80 22.48 W", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}