premise: Incubation is the process of keeping the egg warm so the baby is protected while it's developing.
hypothesis: Incubation is when birds keep their eggs warm while the embryos inside develop.
hypothesis_graph_structure: Incubation<>is<>when birds keep their eggs warm while the embryos inside develop$$$birds<>keep<>their eggs<>while the embryos inside develop$$$the embryos<>inside develop<>