Return a table with the columns keyword, volume, competition

Example

Given the input:

marketing, seo

It will return the data in JSON String record format:

[{ "keyword": "marketing", "volume": 10000, "competition": "0.16" },
 { "keyword": "seo", "volume": 5000, "competition": "0.60" }]

keyword volume competition marketing 10000 HIGH seo 5000 LOW