# The Population statement

## Semantics

There are two ways to populate a concept with atoms:

• The POPULATION statement in the adl-file
• The INCLUDE statement to include an xlsx-file

The first method is laborious, so when you intend to change the population several times, the xlsx-method is easier.

## Syntax

You can define atoms separately and you can define the pairs in a relation. Both methods result in added population for each concept.

POPULATION Tree CONTAINS
[
("Oak")
, ("Birch")
, ("Willow")
]

POPULATION personBank[Person*Bank] CONTAINS
[
("John", "ING")
, ("Jane", "TRIODOS")
]


The list of pairs is a comma-separated list between square brackets. Pairs are comma-separated pairs between round brackets. Each atom is enclosed in double quotes.