In addition to utilitarian items, they also spent many hours grinding and polishing beautifully colored or patterned stone into objects such as beads shaped like animals or insects.
(they; spent; many hours; grinding and polishing) Context(they spent,List([34, 49))):(they; spent many hours grinding; ) Context(they spent,List([34, 49))):(they; spent many hours polishing; ) (beads; shaped; ) (utilitarian items; beautifully colored; )
they spent,List([34, 49)) they spent,List([34, 49))
they they they beads utilitarian items
spent spent many hours grinding spent many hours polishing shaped beautifully colored
many hours grinding and polishing