Go to party does not have a precondition of find out what wrong. Go to party does not have a precondition of dress warm. Light match does not have a precondition of take shower. Light match has a precondition of pick up pen. Meet interest person has a precondition of go to party. Go to party has a precondition of meet person. Eat quickly has a precondition of pick up pen. Go to party has a precondition of get dress. Meet person does not have a precondition of dress warm. Meet person has a precondition of go to party. Get dress has a precondition of take shower. Get dress has first subevent put on underwear.
Go to party does not have a precondition of go to party.