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": ""}
43.33114 :   ?O common field grass. soil: saugatuck loamy sand.  r~k -86.18723  m SECTION 23, DALTON TWSP. Eric A. Bourdo, Jr. VRo  agrostis gigantea PL     W! gigantea  /  muskego6n  Rr^S 136   [&0M[ AGROSTIS  ROTH     m K poaceae  MICHIGAN LK(l9    poales  4   gi United States  D  1304832   S ~  1949-07-31  
{"catalogNumber": "1304832", "order": "Poales", "family": "Poaceae", "scientificName": "Agrostis gigantea", "scientificNameAuthorship": "Roth", "genus": "Agrostis", "subgenus": "", "specificEpithet": "gigantea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Eric A. Bourdo, Jr.", "recordNumber": "136", "verbatimEventDate": "1949-07-31", "habitat": "Common field grass. Soil: Saugatuck loamy sand.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Muskegon", "municipality": "", "locality": "Section 23, Dalton Twsp.", "decimalLatitude": "43.33114", "decimalLongitude": "-86.18723", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}