You are given three grids, where each of them is 5 by 5 in size.
Grids have empty cells marked with "▢" and filled cells marked with "X".
Your task is to generate a referring expression that best describes the target grid while distinguishing it from the two other distractor grids.
The first grid is the target grid, and the following two grids are the distractors.

Target grid:

▢ ▢ ▢ ▢ ▢
▢ ▢ ▢ ▢ ▢
▢ ▢ ▢ ▢ ▢
▢ ▢ ▢ ▢ ▢
X X X X X

Distractor grid 1:

X X X X X
▢ ▢ ▢ ▢ ▢
▢ ▢ ▢ ▢ ▢
▢ ▢ ▢ ▢ ▢
▢ ▢ ▢ ▢ ▢

Distractor grid 2:

▢ ▢ ▢ ▢ ▢
X X X X X
▢ ▢ ▢ ▢ ▢
▢ ▢ ▢ ▢ ▢
▢ ▢ ▢ ▢ ▢

Instruction: Describe the target grid.
Generate the referring expression starting with the tag "Expression: " for the given target grid. Omit any other text.
Expression: The grid with a row of filled cells at the bottom and all other cells empty.
assistant
Expression: The target grid has more X-marked cells than either of the distractor grids, indicating a higher degree of filling in its structure. It features five rows and columns of alternating empty and filled spaces, with the latter being marked by an 'X'. This pattern creates a sense of balance and order within the grid, making it distinct from the other two grids which have either more empty or more filled areas. The target grid's unique combination of structure and filling makes it
assistant