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Now, the one-parameter constructors in the Movie and Symphony
classes call the one-parameter constructor in the Attraction class:
*--------------------------* | Attraction: | | | | constructors: | | zero parameter <-------------* | | | | one parameter <-----------* | | | | | *--------------------------* | | ^ | | | extends | | *--------------------------* | | | Movie: | | | | | | | | constructors: | | | | one parameter -----------* | | three parameter -------------* | ^ | | | | | four parameter | *--------------------------*