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

<answer>(2, 2)</answer>