'How do you make a horizontal class aggregation representation with text in plantuml?
I want to have the following in plantuml.

What I currently have is:
which was generated from
@startuml
Pond o- "o...*" Swan
@enduml
But it doesn't look very good, the text is squished in. How can I make it look better? I've already consulted this page: http://plantuml.com/class-diagram, but I am not finding anything that useful.
Sources
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