Determine the topic of the passage. "In turn, this expansion of air creates a sonic shock wave, similar to a sonic boom , which produces the sound of thunder, often referred to as a clap, crack, or peal of thunder." Topic:
Ans: Thunder

Determine the topic of the passage. "The most commonly used language is English ." Topic:
Ans: Languages of the United States

Determine the topic of the passage. "Disciplines are defined (in part), and recognized by the academic journals in which research is published, and the learned societies and academic departments or faculties to which their practitioners belong." Topic:
Ans: List of academic disciplines

Determine the topic of the passage. "Wayne was born in Winterset, Iowa but his family relocated to the greater Los Angeles area when he was four years old." Topic:
Ans: John Wayne