You will be given a definition of a task first, then some input of the task.
In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.

Context: After winning two more titles for Yamaha in 1986 and 1988, Lawson shocked the racing world by announcing he would be leaving Yamaha to sign with their arch-rivals Rothmans Honda as teammate to his own archrival, Australia's 1987 World Champion Wayne Gardner. Link Information: Eddie Lawson also joined Rothmans Honda in 1989 and went on to win his fourth World Championship.

Gardner had a frustrating season in 1990. After winning at Jerez in Spain, he missed three rounds through injury and only managed 5th in the World Championshi Answer: 1
Output:
How many championships had Lawson's archrival and later teammate win?