sastojati se

1. (sastojati se od + gen.) to consist of; to be made up of
   Stan se sastoji od dve sobe i kuhinje. — The flat consists of two rooms and a kitchen.
   Tim se sastoji od pet programera. — The team is made up of five developers.
2. (sastojati se u + loc.) to consist in; to lie in
   Problem se sastoji u tome što nemamo vremena. — The problem lies in the fact that we have no time.

Used with se: sastojati se od something.