(Prolog) Likes garnetted!!

Question 4 (25 pts) Using Prolog for a Search Problem Assume, you are working with the following knowledge base: family(person(john, cohen, date( 17.may,1990), unemployed), person lily, cohen, date(9, may, 1990), unemployed), []). family(person(john, armstrong, date(7,may, 1988), unemployed), person lily, armstrong, date(29.may, 1961), unemployed), 11). family person ere, baily, date(7. may, 1963), works bbc, 2200)), person grace, baily, date(9.may, 1965), works ntu, 1000)). [person louie, baily, date(25 may, 1983), unemployed)]). family person ere, baily, date(7.may, 1963), works acc, 21200)), person grace, baily, date(9.may, 1965), works ntnu, 12000)), [person louie, baily, date(25. may, 1983), unemployed)]). family (person(erie, fox, date/27 may,1970), works bbe, 25200)). person( grace, fox, date(9.may,1971), works( ntbu, 13000)), [person louie, fox, date(5.may,1993), unemployed)]). family(person tom, cohen, date(7, may, 1960), works bed, 15200)), person ann, cohen, date(29 may, 1961), unemployed), [person pat, cohen, date(5,may,1983), works( bed, 15200)), person jim, coben, date(5.may, 1983), works bed, 15200))]). family person bob, armstrong, date(12,oct, 1977), works( ntnu, 12000), person lizarmstrong, date(6.oct,1975), unemployed). [person bob, armstrong, date(6,0ct,1999), unemployed), person sam,armstrong, date(8,oct,1998), unemployed)]). family(person tony, oliver, date( 7 may,1960), works bbc, 35200)), person anny, oliver, date(9, may, 1961), unemployed), [person patty, oliver, date(8 may,1984), unemployed), person jimey, oliver, date(5.may,1983), unemployed)]). family(person jack, fox, date(27 may, 1940), unemployed), person jane, fox, date(9.aug, 1941), works ntu, 13050)), (person andy, fox, date(5.aug,1967), works com, 12000)), person kai, fox, date(5.jul,1969), unemployed)]). husband(X):-family(X). wife(X):-family(X) child(X) - family Children), member(X, Children). exists(Persons) :- husband Persons); wife( Persons); child Persons). dateofbirth(person, Date. _), Date). salary(person, works, S)), S). salary(person , unemployed), 0). Write the details of steps of search (unification, resolutions, and back tracking) and also the answer for each of the following queries. (You can show the details of your search process by drawing search trees for each of the following queries) ? exists(P), dateofbirth(P. date()), Y