As an example, assume we have the following 3 translation examples.

<br>
the dog <-> le chien
<br>
the chat <-> le chat 
<br>
the bus <->  l'autobus

<p>
In this case the word
<em>the</em> occurs with the 5 French words 
<em>le</em>,
<em>chien</em>,
<em>chat</em>,
<em>l'</em>, and
<em>autobus</em>. Thus n(the) is 5. You should set
T(f | the) = 1/5 for f = le, chien, chat, l', or autobus.

<p>
As another example, the word <em>dog</em> occurs with the two French
words <em>le</em>, and <em>chien</em>.  Thus n(dog) is 2. You should
set T(f | dog) = 1/2 for f = le, or chien, and T(f | dog)=0 for any
other French word f.