Frequently Asked Questions about Project 2

1. Q: For Part A, question 2, the predicate is called "next" or "pascal".

   A: It is called "next". Consider that the word "pascal" in the examples for
this question is replaced with the word "next".

?- next([1],X).
X = [1, 1] ;
No

?- next([1,4,6,4,1],X).
X = [1, 5, 10, 10, 5, 1]
Yes

2. Q: Is there a typo in the handout in the drawing of the example parse
tree?
   A: Yes. It should have an extra np before person:
 
	       question
              /  |     \   
           who   is      np  
                      /  /\  \  
                     /  /  \  \
                  the reln of   np      
                       |        |  
                      brother  person
                                |
                               anna

3. Q: How do we treat brother-in-law when we have the query:
   ?- parse(Tree,[who,is,the,brother,in,law,of,anna]).
   
   A: You consume three words from the input. Something like:
      reln(reln(brother_in_law)) --> [brother],[in],[law].
or:   reln(reln(brother_in_law)) --> [brother, in, law].

      The parse tree contains one relation brother_in_law:
 
	       question
              /  |     \   
           who   is      np  
                      /  /\   \  
                     /  /  \   \
                  the reln of   np      
                       |         |  
                brother_in_law  person
                                 |
                                anna
   
4. Q: Is "?" included in the parse trees?
   A: No. Example:
?- parse(Tree,[who,is,the,brother,of,anna,?]).
Tree = question(who, is, np(the, reln(brother), of, np(person(anna))))
Yes

5. Q: Is there a way to not have to type ";" when producing the testing
script?
   A: Yes. You are allowed to use other ways, but you have to figure out by
yourself how. Hint: check the Prolog manual for "findall" which finds all
solutions, and "tell" which redirects in a file everything printed with
"write". Make sure that the grader can see both the test case and the
 result, not only the result.