function Sentence = createModelNameSentence(ModelName)
% creates a sentence if there are 3 or less model names. Otherwise return
% string for the number of models

Sentence = '';
if length(ModelName)<4    
    for ct=1:length(ModelName)-1
        Sentence = [Sentence ModelName{ct} ', '];
    end
    Sentence = [Sentence ModelName{end}];
else
    Sentence = mat2str(length(ModelName));    
end