How to access element from jArray with Linq

I want to get the first or default element of jArray into an object

{[
  {
    "timex": "XXXX-08-25",
    "type": "date",
    "value": "2016-08-25"
  },
  {
    "timex": "XXXX-08-25",
    "type": "date",
    "value": "2017-08-25"
  }
]}

(This array can be different by the next call) How can I get the value of "value" from the first element in an object with linq? This: "2016-08-25"