Question: Gilbert Blount worked under what person who is considered  "one of the most ingenious and prolific figures in engineering history" and "one of the 19th century engineering giants"?
Sentence (from "Isambard Kingdom Brunel"): Isambard Kingdom Brunel {'1': ", '2': ", '3': ", '4': "} ( ; 9 April 1806 – 15 September 1859), was an English mechanical and civil engineer who is considered "one of the most ingenious and prolific figures in engineering history", "one of the 19th century engineering giants", and "one of the greatest figures of the Industrial Revolution, [who] changed the face of the English landscape with his groundbreaking designs and ingenious constructions".
Relevant evidence: Yes