Instructions: Given a passage and a question, find the answer to the question based on the passage. The answer should consist of only one word that lies in the span of only one of the sentences in the passage.
Input: Paragraph: In republics with a parliamentary system ( such as India , Germany , Austria , Italy and Israel ) the head of state is usually titled president and the principal functions of such presidents are mainly ceremonial and symbolic , as opposed to the presidents in a presidential or semi-presidential system .
Question: what do we call the head of state in india

Output:
president