{"type":"FeatureCollection","features":[
{"type":"Feature","geometry":{"type":"Polygon","coordinates":
[[[102,2],[102,3],[103,3],[103,2],[102,2]]]},"properties":{"a":0,"id":0}},
{"type":"Feature","geometry":{"type":"Polygon","coordinates":
[[[100,0],[100,1],[101,1],[101,0],[100,0]]]},"properties":{"a":1,"id":0}}
]}