Problem 3: Context Free Parses

Using the grammar rules , draw parse trees for the following sentences. Dont worry about agreement, tense, or aspect. Give only a single parse for each sentence, but clearly indicate if the sentences are syntactically ambiguous, and why. If you must add a rule to complete a parse, clearly indicate what rule you have added. Ignore punctuation. (2pts)

(a) Nill and Nicky play football together in their playground on every Friday.

(b) He wanted to buy a new car but he was out of money.

(c) I would like to thank you for your help.

(d) I saw a boy with a book which costs two hundred and twenty-two dollars.