Table schema:
CREATE TABLE table_name_31 (pages_per_minute__color_ VARCHAR, max_page_size VARCHAR, dimensions__mm_ VARCHAR)

Question: What is the pages per minute (color) of the machine that has a max page size of a4 and dimensions (mm) of 303 x 94 x 60?
SQL: SELECT pages_per_minute__color_ FROM table_name_31 WHERE max_page_size = "a4" AND dimensions__mm_ = "303 x 94 x 60"