What is the next dialog turn? CONVERSATION:Conversation:
[a]. What do you know about Prosoplus sumatranus?;
[b]. Prosoplus sumatranus Prosoplus sumatranus is a species of beetle in the family Cerambycidae.;
[a]. What year did it happen?;
[b]. It was described by Stephan von Breuning and de Jong in 1941.;
[a]. Where did it happen?;
[b]. 
It is known from Sumatra.