first language

Deductions

• entity is for example first language ⇐ (first language is a entity), (is a is inverse of is for example)
• languoid class is for example first language ⇐ (first language is a languoid class), (is a is inverse of is for example)
• first language is a entity ⇐ (languoid class is subclass of entity), (first language is a languoid class)
• first language is a languoid class ⇐ (foreign language is a languoid class), (foreign language is opposite of first language)
• foreign language is opposite of first language ⇐ first language is opposite of foreign language