{
  "@context": "https://schema.org",
  "@type": "Event",
  "name": "First Mass — Chicago (Marquette's winter camp), Illinois",
  "startDate": "1674-12-15",
  "description": "First Mass said in Chicago (Marquette's winter camp), Illinois on December 15, 1674 by Fr. Jacques Marquette, S.J..",
  "url": "https://firstmass.net/entries/illinois-chicago-marquette-s-winter-camp-chicago-portage-1674.html",
  "location": {
    "@type": "Place",
    "name": "Chicago (Marquette's winter camp), Illinois",
    "geo": {
      "@type": "GeoCoordinates",
      "latitude": 41.844,
      "longitude": -87.6755
    }
  }
}