It is very likely that someone would want to attend their father's birthday party and be happy about being able to make it, so someone saying that they are happy that they will not be able to go is actually being sarcastic.
Context: I am worried I will not be able to go to my fathers birthday party.
Hypothesis: I am happy that I will not be able to make it to my father's birthday party.

Given this context, is the hypothesis true (Yes/No/I don't know)?