text: William Huskisson, an MP from Liverpool, was killed by one of these objects while shaking the hand of theDuke of Wellington.
full_question: William Huskisson, an MP from Liverpool, was killed by one of these objects while shaking the hand of theDuke of Wellington. Early examples of these objects were made to compete in the Rainhill Trials. A massproducedexample of these objects was named for Swedish opera singer Jenny Lind. George Stephensoncreated an example of these objects known as his namesake "Rocket." The Whyte notation was made todifferentiate between types of these objects by the amount and placement of their wheels. A "Great Western"system for these vehicles was built by Isambard Kingdom Brunel. For 10 points, name these vehicles that weretypically powered by steam engines and pulled trains along the Great Western Railway. 
first_sentence: William Huskisson, an MP from Liverpool, was killed by one of these objects while shaking the hand of theDuke of Wellington.
raw_answer: steam locomotives [prompt on trains until it is read] 