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": "tag_news", "description": "Fetch the latest news stories for a given tag using the BizToc RapidAPI.", "parameters": {"tag": {"description": "The tag for which to fetch the latest news stories.", "type": "str", "default": "apple"}}}, {"name": "get_articles", "description": "Fetches articles from the climate news feed with given parameters for limit, excluded source, and specific source.", "parameters": {"limit": {"description": "Number of articles to fetch. Default is 50.", "type": "int, optional", "default": "50"}, "exclude": {"description": "Source to exclude from the results. Default is 'The Guardian'.", "type": "str, optional", "default": "The Guardian"}, "source": {"description": "Source to fetch articles from. Default is 'Nasa Climate'.", "type": "str, optional", "default": "Nasa Climate"}}}]
Exclude 'The Guardian' and fetch the latest 50 articles from 'Nasa Climate'. Also, get the latest news stories on the tag 'renewable energy'.
user
assistant
[{"name": "get_articles", "arguments": {"limit": 50, "exclude": "The Guardian", "source": "Nasa Climate"}}, {"name": "tag_news", "arguments": {"tag": "renewable energy"}}]