user: I'm currently working on a financial report and I need to crunch some numbers. First, could you calculate the standard deviation for the data set [23, 436, 1231, 123]? Also, I'm helping a friend figure out potential housing costs; they're looking at a 30-year mortgage on a $350,000 loan with a 3.5% interest rate. What would their monthly payment be? Lastly, I'm planning a trip to San Francisco and I need the GPS coordinates for navigation purposes. Can you provide me with the latitude and longitude of San Francisco?

Available functions:
name: calculate_standard_deviation
description: Calculates the standard deviation of a list of numbers.
parameters: type: dict
properties: numbers: type: array
items: type: float
description: The list of numbers.
required: numbers
name: mortgage_calculator
description: Calculates the monthly mortgage payment.
parameters: type: dict
properties: loan_amount: type: float
description: The amount of the loan.
interest_rate: type: float
description: The interest rate of the loan, ranging from 0 to 1.
loan_period: type: integer
description: The period of the loan, in years.
required: loan_amount
interest_rate
loan_period
name: get_prime_factors
description: Calculates the prime factors of a number.
parameters: type: dict
properties: number: type: integer
description: The number to calculate the prime factors of.
required: number
name: get_coordinates_from_city
description: Fetches the latitude and longitude of a given city name using the Maps.co Geocoding API.
parameters: type: dict
properties: city_name: type: string
description: The name of the city, such as 'Rome'.
required: city_name