### Clue: 1 5 in public inquiry reportedly went down (4)
### Answer: SANK 
 ### Explanation: Definition: went down
Sounds like ('in public inquiry reportedly'; I am not sure why Paul uses this circumlocution – perhaps to emphasize that the vowel is not an exact match?) CINQUE (French 5, '1 5'). *But see Ilan Caron @4.