Como uso o prepareForSegue rapidamente?

Eu tenho um ViewController com tableview chamado BasicPhrasesVC e quero passar os dados na célula selecionada para exibi-los no próximo ViewController (chamado BasicPhrasesVC).

class BasicPhrasesVC: UIViewController, UITableViewDataSource, UITableViewDelegate {

let basicPhrases = ["Hello.","Goodbye.","Yes.","No.","I don't understand.","Please?","Thank you.","I don't know."]
var selectedBasicPhrase = ""

func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    return 1
}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return basicPhrases.count
}


func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("Cell")!
    cell.textLabel?.text = basicPhrases[indexPath.row]
    return cell
}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {

Não tenho certeza do que colocar aqui (quero passar a variável "selectedBasicPhrase")

}

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    selectedBasicPhrase = basicPhrases[indexPath.row]
    performSegueWithIdentifier("BasicPhrasesVC2BasicDisplayVC", sender: self)

}
}

Qualquer ajuda é apreciada.

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