Expertise: A high level of knowledge or skill.1
Time: An amount of time that you have available to do something.2
Effort: Physical or mental activity needed to achieve something.3
This class represents the expertise and time and effort of an Agent as a Resource, which can be offered, requested, provided or actually used.
Besides those of Resource:
amount of time in person hours : Decimal
Besides those of Resource:
by-agent / is-agent-in2 : An Expertise and Time and Effort references the Agent whose expertise, time and effort it would be.
uses-expertise-and-skills / is-used-as-a-resource : An Expertise and Time and Effort references any number of Expertises and Skills belonging to the Agent who is providing its expertise and time.
[1] Source: The Cambridge Dictionary of English. https://dictionary.cambridge.org/dictionary/english/expertise
[2] Source: The Cambridge Dictionary of English. https://dictionary.cambridge.org/dictionary/english/time
[3] Source: The Cambridge Dictionary of English. https://dictionary.cambridge.org/dictionary/english/effort