Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: At what approximate age do children begin to understand that a person may have false beliefs about the world ?: 
 Options:  <1> At 18 months. <2> At two years. <3> At four years old <4> At six years old. <5> At eight years old.
