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": ""}
1939-07-18 f  ?n  7484 z  -98.5035  m      xL%S San Luis Potosi (L.) Pers. s@z!c   e DACTYLON a. chase smPL    BANK OF THE RÃ­O TAMPSON T^   cynodon T      30 m  POACEAE aNS     D 112O060   3v PUJAL COY; EL PUJAL  ye7 virginius h. chase  ?p CYNODON DACTYLON  ~y[ 22.1764 
{"catalogNumber": "1120060", "order": "", "family": "Poaceae", "scientificName": "Cynodon dactylon", "scientificNameAuthorship": "(L.) Pers.", "genus": "Cynodon", "subgenus": "", "specificEpithet": "dactylon", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "A. Chase", "recordedBy": "Virginius H. Chase", "recordNumber": "7484", "verbatimEventDate": "1939-07-18", "habitat": "Bank of the r\u00c3\u00ado Tampson", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "San Luis Potosi", "county": "", "municipality": "", "locality": "Pujal Coy; El Pujal", "decimalLatitude": "22.1764", "decimalLongitude": "-98.5035", "verbatimCoordinates": "", "minimumElevationInMeters": "30", "maximumElevationInMeters": ""}