Consider a vocabulary with the following symbols:
1) Occupation (p, o) : Predicate. Person p has occupation o.
2) Customer (p1, p2) : Predicate. Person p1 is a customer of person p2.
3) Boss (p1, p2) : Predicate. Person p1 is a boss of person p2.
4) Doctor, Surgeon, Lawyer, Actor: Constants denoting occupations.
5) Emily, Joe: Constants denoting people.
Use these symbols to write the following assertions in first-order logic:
a. Emily is either a surgeon or a lawyer.
b. Joe is an actor, but he also holds another job.
c. All surgeons are doctors.
d. Joe does not have a lawyer (i. e. is not a customer of any lawyer).
e. Emily has a boss who is a lawyer.
f. There exists a lawyer all of whose customers are doctors.
g. Every surgeon has a lawyer.
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