Read the following premise and answer if the hypothesis is true.
Mary Isobel Downer, Lady Downer (13 December 1924 – 14 October 2014) was a prominent South Australian patron, wife of federal MP and high commissioner Sir Alexander "Alick" Downer, and mother of Liberal Party leader, Australian Foreign Minister and high commissioner Alexander Downer.
Hypothesis: Mary Isobel Downer, Lady Downer talked to Frank.. Is the answer "Yes", "No", or "It's impossible to say"? Respond with only the answer and no additional text.
It's impossible to say
It's impossible to say. The premise does not provide enough information to determine whether Mary Isobel Downer talked to Frank or not.