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": ""}
 AV 1131250    1`w( 1939-07-10  mucronata 9+1[     KUNTH   stipa Cx4g    A. CHASE     7392 9[@u&   i mexico     Virginius H. Chase bv   Stipa mucronata ~    _NPnm poales  
{"catalogNumber": "1131250", "order": "Poales", "family": "", "scientificName": "Stipa mucronata", "scientificNameAuthorship": "Kunth", "genus": "Stipa", "subgenus": "", "specificEpithet": "mucronata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "A. Chase", "recordedBy": "Virginius H. Chase", "recordNumber": "7392", "verbatimEventDate": "1939-07-10", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}