Final answer:
The subject of this question is Philosophy, specifically the topic of language and logic in philosophy.
Step-by-step explanation:
In the early 20th century, philosophers like Gottlob Frege and Bertrand Russell explored the relationship between natural language and formal logic. Frege developed a symbolic language to eliminate ambiguity in natural language, while Russell focused on analyzing proper names and objects using descriptions. These philosophers aimed to use logic to provide clarity and consistency in language and reasoning.