Detailed Instructions: Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.
Problem:Context: Jose Lamberto Diaz Nieblas (born 27 August 1954) is a Mexican politician formerly affiliated to the Institutional Revolutionary Party.
Question: What political party is Lamberto Diaz Nieblas a memeber of?
Solution:
institutional revolutionary party