<documents_info>Types of Galaxies,Origin of the Universe,Expansion of the Universe,Formation of Stars,Dark Matter and Dark Energy,Observational Cosmology</documents_info>
<query>Discuss the key features of spiral galaxies according to the given document collection.</query>
user
Algorithm
assistant
<documents_info>Types of Galaxies,Origin of the Universe,Expansion of the Universe,Formation of Stars,Dark Matter and Dark Energy,Observational Cosmology</documents_info>
<query>Discuss the key features of spiral galaxies according to the given document collection.</query>
user
Chunk
assistant
<query>Discuss the key features of spiral galaxies according to the given document collection.</query>
<documents_info>Types of Galaxies,Origin of the Universe,Expansion of the Universe,Formation of Stars,Dark Matter and Dark Energy,Observational Cosmology</documents_info>