const airport_geojson = {"features": [
	{
		"type": "Feature",
		"geometry": {
			"type": "Point",
			"coordinates": [-0.423,51.464989]
		},
		"properties": {
			"code": "LHR",
			"name": "Heathrow"
		}
	},
	{
		"type": "Feature",
		"geometry": {
			"type": "Point",
			"coordinates": [-73.781,40.650501]
		},
		"properties": {
			"code": "JFK",
			"name": "New York"
		}
	},
	{
		"type": "Feature",
		"geometry": {
			"type": "Point",
			"coordinates": [-118.408,33.938965]
		},
		"properties": {
			"code": "LAX",
			"name": "Los Angeles"
		}
	},
	{
		"type": "Feature",
		"geometry": {
			"type": "Point",
			"coordinates": [139.384,37.245842]
		},
		"properties": {
			"code": "HND",
			"name": "Tokyo"
		}
	},
	{
		"type": "Feature",
		"geometry": {
			"type": "Point",
			"coordinates": [8.562,50.046192]
		},
		"properties": {
			"code": "FRA",
			"name" :"Frankfurt"
		}
	},
	{
		"type": "Feature",
		"geometry": {
			"type": "Point",
			"coordinates": [-122.318,47.438686]
		},
		"properties": {
			"code": "SEA",
			"name": "Seattle",
		}
	}
	
	], "type": "FeatureCollection"}