02. Extract Sentences by Keyword

using System;
using System.Text.RegularExpressions;

public class Example
{
    public static void Main()
    {
        string word = Console.ReadLine();
        string pattern = $@"(\.|\?|!|)([\w@#$%^&*()\-=+`~\s]+\ {word} [\w\s@#$%^&*()\-=+`~]+)(\.|!|\?|)";
        string input = Console.ReadLine();


        foreach (Match m in Regex.Matches(input, pattern))
        {
            if (m.Groups[2].Success)
            {
            Console.WriteLine(m.Groups[2].Value.Trim());
            }
        }
    }
}