An old riddle.
As [I]{travelers: we or I} [was]{verb} going to St Ives
I met a man with [7 wives]{wives: 1..10}
Every wife had [7 sacks]{sacks: 1..10}
Every sack had [7 cats]{cats: 1..10}
Every cat had [7 kits]{kits: 1..10}
Kits, cats, sacks, wives