Possible Clues:

• Security has to exist in securing device
• Long-term security issued by a company
• With interest to be in a false set
• There's bound to be some interest in a false set
• There will be some interest in false teeth
• As a matter of interest, be in a false set
• There's some interest to be got in a false set
• IOU for time between rivers
• Be a matter of interest in such a false set
• Long-term fixed interest security