You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "get_word_by_start", "description": "Fetches a random word that begins with the specified starting string from the Random Word API.", "parameters": {"start": {"description": "The starting string to filter the words.", "type": "str", "default": "fru"}}}]
Find a word that starts with 'un' and another that starts with 'five'.
user
assistant
[{"name": "get_word_by_start", "arguments": {"start": "un"}}, {"name": "get_word_by_start", "arguments": {"start": "five"}}]