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": "predict_evolution_rate", "description": "Predict the evolutionary rate for a specific species for a given timeframe.", "parameters": {"species": {"description": "The species that the evolution rate will be predicted for.", "type": "str", "default": "Darwin"}, "years": {"description": "Number of years for the prediction.", "type": "int", "default": "Darwin"}, "model": {"description": "The model used to make the prediction, options: 'Darwin', 'Lamarck', default is 'Darwin'.", "type": "str"}}}]
Can you tell me the evolution rate for tigers over the next century using the Darwin model? And also, the evolution rate for zebras for the following 150 years based on the Lamarck model?
user
assistant
[{"name": "predict_evolution_rate", "arguments": {"species": "tiger", "years": 100, "model": "Darwin"}}, {"name": "predict_evolution_rate", "arguments": {"species": "zebra", "years": 150, "model": "Lamarck"}}]