There are 4 shapes on a 7x7 grid. Which shape is closest to the red 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: red right_triangle at (0, 2)
Distance from target shape to gray right_triangle at (6, 0): 8
Distance from target shape to orange rectangle at (0, 1): 1
Distance from target shape to pink square at (1, 1): 2
Closest shape is the orange rectangle at (0, 1) with distance 1</think>

<answer>(0, 1)</answer>