Support with good HCPs really difficult case

Support with good HCPs really difficult case

N
W   E
 
S
♠ A 10 9 5 3
♥ A 9 8 2
♦ K Q
♣ Q 9

Dealer:

West

W N E S
1♠ Pass ?

Very occasionally we might get this situation, where partner has opened 1♠ and we need to use a delayed game raise but have only four hearts and no 3-card minor.