"args" is a JSON Object with only one property.

<input> wrapper in ```xxx```.

The following is the generate task, which is processed in four steps.
Step 1: classify <input> to <key>.
Step 2: extract <input> to <value>.
Step 3: generate args json object with <key> as proerty key and  <value> as property value.
Step 4: push args json object into json array.

speical tag <key> is "args" property key,key is one of "image","text","audio".
speical tag <value> is "args" property value.

first output reasoning generate task steps,then output json data.

```
given a file "example/dsadjklcxz.mp3"
```