<s>[INST] A relational database consists of seven tables. One of them is the "positions" table. Each "position" has several attributes, including "position type". This table has 1350 records representing different "positions". There are four types of positions: "red", "green", "blue", and "yellow". What is the maximum number of position types, k, that would enable the following condition to be met: when the top k most common position types are removed from the table, no more than 3% of the records are left?[/INST]