Most of the time L'ewa sentences have only one clause. This can be anything from a single verb to a subject, verb and object. However, sometimes more information is needed. Consider this sentence:
The dog which is blue is large.
This kind of a relative clause would be denoted using
hoi, which would make
the sentence roughly the following in L'ewa:
le wufra hoi blanu xi brado.
xi is needed here in order to make it explicit that the subject
noun-phrase has ended.
Similarly, an incidental relative clause is done with with
le wufra joi blanu ke brado the dog, which by the way is blue, is big.