sentence2_structure: The main function of the spleen<>is<>to filter the blood and remove unwanted red blood cells
sentence1: The function of the spleen is to act as a filter, cleansing the blood of older or damaged red and white blood cells along with platelets.
sentence2: The main function of the spleen is to filter the blood and remove unwanted red blood cells.
question: The main function of this organ is to filter the blood and remove unwanted red blood cells?