where is ansible looking for packages code example

Example: ansible package

- name: install ntpdate
  package:
    name: ntpdate
    state: present

# This uses a variable as this changes per distribution.
- name: remove the apache package
  package:
    name: "{{ apache }}"
    state: absent

- name: install the latest version of Apache and MariaDB
  package:
    name:
      - httpd
      - mariadb-server
    state: latest