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 target grid has a unique pattern of filled cells in the second and third rows, with the first and fifth rows having all cells filled.
assistant
Expression: The target grid has a unique pattern of three rows and columns where all cells are filled, except for one row and column that have two empty cells each. This pattern is not present in either distractor grid.
assistant