A musical group of four doors are sitting on the floor, two leaning on the windowsillA musical group of four doors are sitting on the floor, two leaning on the windowsill
A musical group of five people, four at the sofa and one at the postA musical group of five people, four at the sofa and one at the post
A musical group of four people are standing huggingA musical group of four people are standing hugging
Число, цифра и количество 4.