def return_geojson(lat,lng,increment):
    """returns geojson box around lat and lng"""

    geojson_geometry = { # (lng,lat)
    "type": "Polygon",
    "coordinates": [
    [
    [
    lng+increment,
    lat+increment
    ],
    [
    lng+increment,
    lat-increment
    ],
    [
    lng-increment,
    lat-increment
    ],
    [
    lng-increment,
    lat+increment
    ],
    [
    lng+increment,
    lat+increment
    ]
    ]
    ]
    }
    
    return geojson_geometry