For the following:
(a) John is angry because Mary murdered the platypus
(b) Mary murdered the platypus
A. (a) entails (b)
B. (a) presupposes (b)
Now it's your turn. What do you think?
Both entails and presuppposes?
Did John know about the murder first? Or did she murder the platypus first?
she murdered the platypus first
Then I think it's only (a).
Read through the ANSWER (don't worry about the questions) here: