instruction: In Readwhere app, search the keyword Sportstar

previous_actions: 

active_application: Readwhere

screen_description: windows {
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    top: 136
    right: 1080
    bottom: 2400
  }
  id: 181
  title: "Readwhere"
  window_type: TYPE_APPLICATION
  is_active: true
  is_focused: true
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        bottom: 2400
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        bottom: 2337
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      depth: 1
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        right: 1080
        bottom: 2400
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      depth: 1
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        top: 136
        right: 1080
        bottom: 2337
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      depth: 2
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      class_name: "android.widget.LinearLayout"
      depth: 3
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      class_name: "android.widget.FrameLayout"
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    nodes {
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      class_name: "android.widget.RelativeLayout"
      depth: 5
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      class_name: "android.widget.FrameLayout"
      depth: 6
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    nodes {
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        right: 1080
        bottom: 2337
      }
      class_name: "androidx.viewpager.widget.ViewPager"
      is_focusable: true
      is_scrollable: true
      depth: 7
    }
    nodes {
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        top: 136
        bottom: 2337
      }
      class_name: "android.widget.RelativeLayout"
      depth: 8
    }
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      }
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      depth: 8
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      depth: 9
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    nodes {
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      depth: 9
    }
    nodes {
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        bottom: 2337
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      depth: 9
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}


assistant: !FUNCTIONCALL{"name": "navigate_back", "parameters": {}}