using colons for now, but would like to somehow encapsulate a sentence
in this way (basically), with quotes.

speaker = ["joe ", "betty "]
expression = ["said: ", "replied: ", "stated: "]
content = ["hello.", "bye."]

053:0> sentence = speaker[0] + expression[1] + content[0]
"joe replied: hello."
but I'd like to get:
"joe replied, "hello.""

thanks!