odata query

Hi,

Can we retrieve 'Title' from the odata retrieved results like this?

var retrieveReq=new XMLHttpRequest();
    retrieveReq.open("GET", odataSelect, false);
    retrieveReq.setRequestHeader("Accept", "application/json");
    retrieveReq.setRequestHeader("Content-Type", "application/json;charset=utf-8");
    retrieveReq.onreadystatechange = function () {
    if (retrieveReq.readyState === 4) {
            if (retrieveReq.status === 200) {
var retrieved = JSON.parse(retrieveReq.responseText).d;
var contractline_text=retrieved.Title;
alert(contractline_text);

I am seeing 'Undefined' for contractline_text. How should I retrieve Title?

Thanks