There are 6 shapes on a 5x5 grid. Which shape is closest to the yellow rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: yellow rectangle at (1, 0)
Distance from target shape to red square at (0, 3): 4
Distance from target shape to brown trapezoid at (3, 0): 2
Distance from target shape to gray right_triangle at (1, 1): 1
Distance from target shape to green rectangle at (4, 3): 6
Distance from target shape to cyan rectangle at (0, 4): 5
Closest shape is the gray right_triangle at (1, 1) with distance 1</think>

<answer>(1, 1)</answer>