Shoe : I : : Table : II
I. [A] Foot [B] Socks [C] Heel [D] Factory
II. [P] Drawer [Q] Chair [R] Wood [S] Carpenter
In a certain code language, '479' means 'fruit is sweet';
'248' means 'very sweet voice' and
'637' means 'eat fruit daily'.
Which digit stands for 'is' in that code ?