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": ""}
1924-07-18 pPAF   (j. presl) s.d. koch & sãFâ¡nchez ?_   j contact um herbarium s9ubsp. (        united states  0/$    R`ZE eragrostis Eragrostis mexicana subsp. virescens           mexicana C  VIRESCENS >dAO  poales 9i:   | W# WILLIAM A. ARCHER    NEVADA E< 
{"catalogNumber": "", "order": "Poales", "family": "", "scientificName": "Eragrostis mexicana subsp. virescens", "scientificNameAuthorship": "(J. Presl) S.D. Koch & S\u00c3\u0083\u00c2\u00a1nchez", "genus": "Eragrostis", "subgenus": "", "specificEpithet": "mexicana", "verbatimTaxonRank": "subsp.", "infraspecificEpithet": "virescens", "identifiedBy": "", "recordedBy": "William A. Archer", "recordNumber": "", "verbatimEventDate": "1924-07-18", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Nevada", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}