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": ""}
 1956-06-03 U6 F!   dichanthelium sphaerocarpon ? !       # caddo lake state park, 15 mi ne of marshall  j Poaceae   +YVWg (elliott) gould    Harrison    p,Re 1430572   u DAVID P. GREGORY, GEORGE EITEN 5 nB  dichanthelium S ],   United States 8    1E5 TEXAS Poales `2   N sphaerocarpon  
{"catalogNumber": "1430572", "order": "Poales", "family": "Poaceae", "scientificName": "Dichanthelium sphaerocarpon", "scientificNameAuthorship": "(Elliott) Gould", "genus": "Dichanthelium", "subgenus": "", "specificEpithet": "sphaerocarpon", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "David P. Gregory, George Eiten", "recordNumber": "5", "verbatimEventDate": "1956-06-03", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "Harrison", "municipality": "", "locality": "Caddo Lake State Park, 15 mi NE of Marshall", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}