print all records using query in prolog

Question

lectures(monday, nolecture).
lectures(tuesday, vp).
lectures(tuesday, se).
lectures(tuesday, ddbms).
lectures(wednessday, ds).
lectures(wednessday, mpl).
lectures(thursday, vp).
lectures(thrusday, se).
lectures(friday, ds).
lectures(friday, mpl).
lectures(saturday, ai).
lectures(saturday, ddbms).

?- lectures(friday, X), write(X),nl.

the query print only first record as ds only, I want to print all record on particular day i.e Friday, the result should be ds and mpl.

update me!

Answer 1

Add fail. to the end of your query:

| ?- lectures(friday, X), write(X), nl, fail.
ds
mpl

no
| ?- 

Also see this very similar question so try to use search a little bit more before asking a new question.