8) True or false a) We will add a special end-of-word symbol for every word in the training corpus while performing BPE. b) A language model usually needs labels for its training. c) In regular expression, \d matches any decimal digits 09. d) In regular expression, $ matches end of line. 9) str= " The American Revolutionary War, also known as the Revolutionary War or American War of Independence, secured American independence from Great Britain. Fighting began on April 19, 1775, followed by the Lee Resolution on July 2, 1776, and the Declaration of Independence on July 4, 1776. The paragraph number 2345444." a. Write a Python regex pattern to find years from str. pattern = b. Write the name of the appropriate method of re (assume Python) that will help you to find all years import re match = re. (pattern,str) 10) Explain "Precision" and "Recall" and provide their formula's