Chapter 2. Relationships and Places
11
8. ka’e
9. dublin
10. selbri
Take your places...
Now we can recognise a gismu, let’s see what we can make it do. dunda means ‘give’, and as a selbri it
describes a relationship between a giver, something they give, and someone who receives it—in that
order. (Lojban insists on the order so you can tell which is which; but that’s a convention of dunda,
rather than something intrinsic in the act of giving.)
Let’s say we have three people, Maria, Claudia and Julia, for instance. If we say
la mari,as. dunda la .iulias. la klaudias.
we mean that Maria gives Julia to Claudia.
Note: Thelayouseeinfrontofeachcmeneisanarticle,likeaandtheinEnglish.Itsjobistosignaltothe
listenerthatthewordcomingupisaname,andnotsomeotherkindofword.
If, on the other hand, we say
la .iulias. dunda la mari,as. la klaudias.
we mean that Maria is who is being given away, and Julia is the one who gives her to Claudia. How do
we know this? English uses the word to to indicate the receiver, and in some other languages (like
Latin or Turkish) the form of the words themselves change. In Lojban, as in logic, we have what is
called place structure.
Place-structure means that dunda doesn’t just mean give, it means
x
1
gives x
2
to x
3
where x means someone or something. Even if we just say dunda on its own, we still mean that
someone gives something to someone; we just aren’t interested in (or we already know) who or what.
We can say, then, that dunda has three ‘places’. We can think of places as slots which we can, if we
want, fill with people, objects, events or whatever. These places are called sumti in Lojban (easy to
remember, as it sounds a bit like someone saying something and chewing off the end of the word).
Again, a sumti is not a type of word, it is something a word does. The simplest Lojban sentence is a bridi,
i.e. a selbri and a bunch of sumti. In other words,
bridi = selbri + sumti
Note for logicians and computer programmers: Forselbri,logicianscanread‘predicate’or‘relation’,and
programmerscanread‘function’;forsumti,bothcanread‘argument’.
How many sumti can a selbri describe? The number depends on the place structure of the word we use
for the selbri. (There are ways of tagging on extra sumti, which we’ll cover in later lessons). A gismu has
a set number of places; as we’ve just seen, dunda has three. The number of places varies from one to a
staggering (and rare) five. Here are some examples.