{
"datasetType": "TF",
"numRows": 10,
"columns": {
"image": {
"type": "uint8",
"rank": 3,
"shape": [3, 4, 2],
"t_impl": "cvmat"
},
"label" : {
"type": "int64",
"rank": 1,
"t_impl": "flex"
}