TRON: Legacy has genre Sci-Fi. Sci-Fi has examples: The Andromeda StrainThe Andromeda Strain has genre Science FictionScience Fiction has examples: Cloverfield. Cloverfield has genre Sci-Fi
[Human]: I like the movie TRON: Legacy.  Do you know something similar? [Assistant]: I would recommend Andromeda, it is a Sci-Fi drama like Tron [Human]: Who stars in that? [Assistant]: It stars Arthur Hill and James Olsen.  [Human]: Is that one science fiction genre also?  If so I'd like to watch it. 
You do have Cloverfield that's in the same drama