TASK DEFINITION: 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. 
PROBLEM:  "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" 

SOLUTION:  unknown location 

PROBLEM:  "process paragraph : : The seed germinates. The plant grows. The plant flowers. Produces fruit. The fruit releases seeds. The plant dies. ", "event : The plant grows.", "entity : seed ; seeds" 

SOLUTION:  not exist 

PROBLEM:  "process paragraph : : Water is introduced to carbon dioxide. The water becomes acidic. The water seeps down to a mineral based material. The acidity of the water carves and shapes the rock. And may form geological phenomenon. ", "event : The water becomes acidic.", "entity : water" 

SOLUTION:
 unknown location