user: Question: What signatory has a purpose of Police security and Infotalent payee?
Columns: ['Payee', 'Purpose', 'Amount (millions)', 'Signatories', 'Date signed']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Anglo Leasing', 'Forensic LAB – CID', 'US$54.56', 'PS-Treasury PS-Internal Security OP', '16 August 2001']
SQL:

assistant: SELECT "Signatories" FROM "Table" WHERE "Purpose" = 'Police security' AND "Payee" = 'Infotalent';