There are 4 shapes on a 7x7 grid. Which shape is closest to the pink trapezoid in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: pink trapezoid at (1, 6)
Distance from target shape to orange square at (6, 0): 11
Distance from target shape to cyan square at (5, 5): 5
Distance from target shape to brown right_triangle at (0, 1): 6
Closest shape is the cyan square at (5, 5) with distance 5</think>

<answer>(5, 5)</answer>