ionic how to identify clicked button in a *ngFor loop

I am creating a list of text and buttons. I want to identify which button has been clicked in the clicked function.

HTML

<ion-list>
    <ion-item ion-item *ngFor="let act of questions.test">
      {{act.quote}}
      <ion-item>
        <button large ion-button item-right (click)="SelectClicked()">Select</button>
      </ion-item>
    </ion-item>
</ion-list>

TS

  this.questions =
  {
    "test":[
    {
      "quote": "first row"
    }, {
      "quote": "second row"
    }, {
      "quote": "third row"
    }, {
      "quote": "fourth row"
    }
    ]
  }


SelectClicked(detail){
//please help
// which button was clicked ( 1 to 4 ) ?
  console.log("SelectClicked" + detail);
}