A
system and method for
processing operations involving dependent sequences. A
natural language processor component is capable of
parsing an input
audio signal to identify a request and a triggering keyword. A prediction component is capable of determining a thread based on the triggering keyword and the request, which includes a first action, a second action following the first action, and a third action following the second action. A content selector component is capable of selecting a content item based on the third action and the triggering keyword. An
audio signal generator component is capable of generating an output
signal including the content item. Before at least one of the first and second actions occurs, the interface is capable of transmitting the output
signal to cause a
client computing device to drive a speaker to generate a
sound wave corresponding to the output
signal.