Alley may be paved, or unpaved, and a blind alley is a cul-de-sac. Modern urban developments may also provide a service road to allow for waste collection, or rear access for fire engines and parking. Because of geography, steps (stairs) are the predominant form of alley in hilly cities and towns. This includes Quebec City in Canada and in the United States Pittsburgh (see Steps of Pittsburgh), Cincinnati (see Steps of Cincinnati), Minneapolis, Seattle, and San Francisco as well as Hong Kong, Genoa and Rome. Some alleys are roofed because they are within buildings, such as the traboules of Lyon, or
Phrase contains. This means that some expressions that may be called phrases in everyday language are not phrases in the technical sense. For example, in the sentence "I can't put up with Alex", the words "put up with" (meaning 'tolerate') may be referred to in common language as a phrase (English expressions like this are frequently called phrasal verbs) but technically they do not form a complete phrase, since they do not include "Alex", which is the complement of the preposition "with". In grammatical analysis, most phrases contain a key word that identifies the type and linguistic features of the phrase;