{
  "@context": "https://schema.org",
  "@type": "Event",
  "name": "First Mass — Vermillion, South Dakota",
  "startDate": "1840",
  "description": "First Mass said in Vermillion, South Dakota on May 1840 by Fr. Christian Hoecken, S.J..",
  "url": "https://firstmass.net/entries/south-dakota-vermilion-1840.html",
  "location": {
    "@type": "Place",
    "name": "Vermillion, South Dakota",
    "geo": {
      "@type": "GeoCoordinates",
      "latitude": 42.772784,
      "longitude": -97.006763
    }
  }
}