Consider of vector of strings containing names of people. Each string contains one name which can be in various formats: Mary Ellen Brown' (i.e. first name followed by middle name if any) and by last name), Brown, Mary Ellen' (last name, followed by first and middle names), Paul Smith' (if there is no middle name) or Paul, Smith? Write a function in R that takes two arguments: a vector of such strings and a single character string. The function counts how often the second argument occurs as a last name in the vector that is the first argument. (10 points) UseR Langeuage Consider of vector of strings containing names of people. Each string contains one name which can be in various formats: Mary Ellen Brown' (i.e. first name followed by middle name if any) and by last name), Brown, Mary Ellen' (last name, followed by first and middle names), Paul Smith' (if there is no middle name) or Paul, Smith? Write a function in R that takes two arguments: a vector of such strings and a single character string. The function counts how often the second argument occurs as a last name in the vector that is the first argument. (10 points) UseR Langeuage