Distinguish the collective terms from the proper names in the following table.

Mankind	divine mercy
animal	agrarian reform
science	Elektra
river	University of Delaware
God	white horse
American	Social Security
public schools	Costa Rican
Paris	Napoleon’s white horse
good	Beatrice
black	White Horse
Einstein	this piece of paper

Indicate the denotation and connotation of each one of the following terms.

U.S.A. political party	Costa Rican writer
East Coast fluvial port	planet
metal	O.A.S. member nation
(your town's) high school	automobile make
capital sin	prime number under 50

Arrange the following terms in decreasing order, according to their intension:

1. narrative, fiction, literary work, writing, psychological fiction.

2. U.S.A. inhabitant, human being, New Yorker, North American, inhabitant of the Americas.

Arrange the following terms in decreasing order, according to their extension.

1. vertebrate, Siamese, animal, cat, mammal.

2. Congress member, citizen over 21, elected official, House of Representative member.

Define some of the following terms by means of proximate genus and specific differentia, using as genus words from the list itself. Use as definiendum or genus the largest possible number of words proposed, choosing freely any necessary specific differentiae.

boat	man
hotel	husband
epic	animal
pilot	vessel
physics	battleship
building	ode
science	poetry
motel	worker
literature	marine

In the following definitions, indicate the rule or rules broken by each:

1. Duty is the concept of an action to which one is obliged.

2. "Wisdom is something different from everything else". (Heraclitus, Frag. 108)

3. An airplane is a machine used for flying.

4. A scholar is a person associated to a school.

5. Man is an animal with musical sensitivity.