Favourite sentences from end-of-semester marking

"Sometimes sentences can be ambiguous. For instance, in Chinese, the sentence "The fire burned up all of them" is ambiguous. Even though we use this sentence all the time in our daily talk in China, it is still ambiguous."

(This one probably only funny if you are a linguist.) "Semantic roles include things like 'agent' 'experiencer' 'instrument' 'source' 'location' and 'victim'."

And the "what were you thinking?" award goes to: "The sentence 'The man hit the robber with a long nose' is well-formed nonsense, since no human has a long nose, even if he is a robber."