In this task, you are given a paragraph, event and an entity. The event is part of the given paragraph and it changes the state of the entity. Your task is to classify the state of the entity into three classes: 1) not exist, 2) unknown location and 3) known location. "not exist" means the entity doesn't exist in that state anymore. "unknown location" means the entity exists in that state but location is unknown. "known location" means the entity exists and location is known. 

Ex Input:
 "process paragraph : : To bake a cake you first need to gather your ingredients. Preheat the oven to desired baking temperature. Grease your preferred cake pan with crisco or butter or other non-stick spray. Add eggs and vegetable oil to the dry ingredients. Stir or whisk until all the dry flour has been absorbed. Pour the batter into the greased cake pan. Place cake pan into the oven for the required time. When a toothpick inserted into the cake comes out clean, the cake is done baking. ", "event : Preheat the oven to desired baking temperature.", "entity : ingredients" 

Ex Output:
 unknown location 


Ex Input:
 "process paragraph : : An airline reservation is made. The passenger arrives early at the airport. The luggage is checked. The passenger waits in line. The passenger shows their identification and gets a boarding pass. The passenger goes to their gate. The passenger gets in line when it's time to board. The person boards the plane. The plane arrives at the destination. The passenger gets off the plane at their destination. ", "event : The passenger arrives early at the airport.", "entity : plane" 

Ex Output:
 unknown location 


Ex Input:
 "process paragraph : : Something happens to produce a sound. The sound travels in waves. The sound waves hit an object. The object absorbs some of the sound waves. Some of the sound waves bounce off of the object. The reflected sound waves can be heard, though they have slightly different properties than the original sound. The sound continues to bounce off of things and produce echoes until it is totally absorbed or dissipated. ", "event : The sound travels in waves.", "entity : sound ; sound waves" 

Ex Output:

 unknown location 


