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

Distractor grid 1:

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

Distractor grid 2:

X ▢ X X X
X ▢ X X X
X ▢ X X X
X ▢ X X 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 all cells filled with "X".
assistant
Expression: The target grid has more X's than either of the distractor grids, with a pattern of four X's in a row horizontally and vertically. It also contains fewer empty cells marked by ▢ compared to the distractor grids. In particular, it does not have any rows or columns where all cells are empty. The target grid can be described as having a more densely filled appearance with its distinctive pattern of four X's in a
assistant