This style of debate generally centers on three main contentions, although a team can occasionally use two or four. In order for the affirmative side to win, all of the negative contentions must be defeated, and all of the affirmative contentions must be left standing. Most of the information presented in the debate must be tied in to support one of these contentions, or "signposted". Much of extemporaneous speaking is similar to the forms known as policy debate and Student Congress Debate . One main difference with both of them, however, is that extemporaneous speech focuses less on the implementation of the resolution. Also, Extemporaneous Speech is considered in more areas, especially in the United States, as a form of Speech, which is considered separate from debate, or itself a form of debate with several types of events.