CREATE TABLE table_31581 ("Payee" TEXT, "Purpose" TEXT, "Amount  ( millions ) " TEXT, "Signatories" TEXT, "Date signed" TEXT)

What signatory has a purpose of police security and Infotalent payee?
SELECT "Signatories" FROM table_31581 WHERE "Purpose" = 'police security' AND "Payee" = 'infotalent'
SELECT "Signatories" FROM "table_31581" WHERE "Payee" = 'infotalent' AND "Purpose" = 'police security'