void main() {
    String sentence = "The quick brown fox";

    IO.println(sentence.contains("quick"));
    IO.println(sentence.contains("slow"));
    IO.println(sentence.contains("the"));
    IO.println(sentence.toLowerCase().contains("the"));
}

// From Groundwork, chapter 8 (ch08-strings-as-data), box 7.
// This example is from Groundwork, licensed CC BY-NC-SA 4.0.
// Run with: java ch08_07.java