Convert Sentence to First Order Logic

How to Convert Sentence to First Order Logic

In the topic of Propositional logic, we have seen that how to address explanations utilizing propositional logic. However, tragically, in propositional logic, we can address current realities, which are either obvious or misleading. PL isn’t adequate to address the intricate sentences or normal language explanations. The Convert Sentence to First Order Logic has extremely restricted expressive power. Consider the accompanying sentence, which we can’t address utilizing PL logic.

There is no cookbook strategy for taking a reality communicated in regular language or some other structure and communicating it in first-order logic. You need to think however the Sentence Generator of what it is you need to say. However, the accompanying rundown of ideas and normal blunders might be useful.

We’ll first beginning by concentrating on the connection among regular and formal dialects. Thusly, we’ll contrast first-order logic and propositional logic. In doing as such, we’ll gain proficiency with the particular qualities that the previous has and when utilizing it over the latter is favorable.

We’ll at last concentrate on the documentation and grammar of Convert Sentence to First Order Logic. This will permit us to decipher articulation in regular language into substantial articulations in first-order logic.

First-Order logic:

  • First-order logic is one more method of information portrayal in computerized reasoning. It is an augmentation to propositional logic.

  • FOL is adequately expressive to address the normal language explanations in a brief manner.
  • First-order logic is otherwise called Predicate logic or Convert Sentence to First Order Logic. First-order logic is a strong language that creates data about the items in an all the more simple manner and can likewise communicate the connection between those articles.
  • First-order logic (like regular language) doesn’t just expect that the world contains realities like propositional logic yet in addition accepts the accompanying things on the planet:
  • Objects: A, B, individuals, numbers, colors, wars, hypotheses, squares, pits, wumpus, ……
  • Relations: It very well may be unary connection, for example, red, round, is adjoining, or n-any connection, for example, the sister of, sibling of, has variety, divides
  • Capability: Father of, closest companion, third inning of, end of, ……

As a characteristic language, first-order logic likewise has two fundamental parts:

  • Sentence structure
  • Semantics

Instances of First-Order Recipes

Convert Sentence to First Order Logic

A few Apples Are Green

We can now see a few instances of first-order equations and their understanding for a particular rambling space. This will permit us to comprehend how to remove first-order recipes from regular language, and on the other hand how to Convert Sentence to First Order Logic from equations to it.

The first recipe relates to the sentence “A few apples are green” that we concentrated prior:

  • a few apples green

To make an interpretation of it into a first-order equation we really want to characterize:

  • A variable x
  • An unary predicate A(x) relating to “x is an apple”, and an unary predicate G(x) comparing to “x is green”
  • We can then convert that sentence into the recipe \exists{x}(A(x) \wedge G(x)).

Eateries, Films, and Popcorns

The second sentence that we’ll convert is “There isn’t any eatery that sells popcorns, yet films do”:

  • eateries films

We can first revamp this sentence as “On the off chance that x is an eatery then x doesn’t sell popcorns, and on the off chance that x is a film, it sells popcorns and on the off chance that x is a café then x it’s anything but a film and in the event that x is a film then, at that point, it’s anything but a café”. We can then characterize the accompanying:

  • A variable x
  • Three unary predicates R(x), C(x), and P(x), alluding individually to “x is an eatery”, “x is a film”, and “x sells popcorns”


In this tutorial, we concentrated on the calculated bases of Convert Sentence to First Order Logic and figured out how to determine it as a speculation from propositional logic. We’ve likewise concentrated on all around framed recipes and their rudimentary parts, in addition to the principles as per which we can interface them into substantial equations.