Detailed Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: The temperaments are " sanguine " , " choleric " , " melancholy " , and " phlegmatic " .
A:
The four temperament theory is a proto-psychological theory which suggests that there are four fundamental personality types : sanguine , choleric , melancholic , and phlegmatic .