Update util.py

util.py

@@ -18,7 +18,7 @@ def get_final_answer(question, initial_answer):
         You are given a question and an initial answer.
         Your final answer must be a number OR as few words as possible OR a comma separated list of numbers and/or strings.
         If you are asked for a number, don't use comma to write your number neither use units such as $ or percent sign unless specified otherwise.
-        If you are asked for a string, don't use articles, neither abbreviations (e.g. for cities), start with an uppercase letter, and write the digits in plain text unless specified otherwise.
+        If you are asked for a string, don't use articles, neither abbreviations (e.g. for cities), start a single word with an uppercase letter, and write the digits in plain text unless specified otherwise.
         If you are asked for a comma separated list, apply the above rules depending of whether the element to be put in the list is a number or a string.
         **Question:** """ + question + """
         **Initial answer:** """ + initial_answer + """