Definition: In this task you are given data in the tabular format and a question. Write the answer to the question based on the information in the table.
Input: Table: ['Date', 'Number', 'Type', 'Captain', 'Casualties', 'Sunk by']. ['4 May 1943', 'U-209', 'VIIC', 'Heinrich Brodda', '46', 'Catalina Flying-boat of No. 5 Squadron RCAF']. ['5 May 1943', 'U-638', 'VIIC', 'Oskar Staudinger', '44', 'HMS Sunflower']. ['5 May 1943', 'U-531', 'IXC/40', 'Herbert Neckel', '54', 'HMS Vidette']. ['6 May 1943', 'U-192', 'IXC/40', 'Werner Happe', '55', 'HMS Loosestrife']. ['6 May 1943', 'U-125', 'IXC', 'Ulrich Folkers', '54', 'HMS Oribi, HMS Snowflake']. ['6 May 1943', 'U-630', 'VIIC', 'Werner Winkler', '47', 'HMS Vidette']. ['6 May 1943', 'U-438', 'VIIC', 'Heinrich Hensohn', '48', 'HMS Pelican']. Question: what boats were lost on may 5?
Output:
U-638, U-531