11. An apparatus comprising: at least one processor; and at least one memory including computer program code, at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to: at least: identify a time period to be described linguistically in an output text; identify a communicative context for the output text; determine one or more temporal reference frames that are applicable to the time period and a domain defined by the communicative context; and generate a phrase specification that linguistically describes the time period based on a descriptor that is defined by a temporal reference frame of the one or more temporal reference frames, wherein the descriptor specifies a time window that is inclusive of at least a portion of the time period to be described linguistically.
11. An apparatus comprising: at least one processor; and at least one memory including computer program code, at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to: at least: identify a time period to be described linguistically in an output text; identify a communicative context for the output text; determine one or more temporal reference frames that are applicable to the time period and a domain defined by the communicative context; and generate a phrase specification that linguistically describes the time period based on a descriptor that is defined by a temporal reference frame of the one or more temporal reference frames, wherein the descriptor specifies a time window that is inclusive of at least a portion of the time period to be described linguistically. 20. An apparatus of claim 11 , wherein the at least one memory including the computer program code is further configured to, with the at least one processor, cause the apparatus to: determine that a single descriptor does not specify a time window that is inclusive of the time period to be described linguistically; and determine two or more descriptors that are defined by a temporal reference frame of the one or more temporal reference frames, wherein the two or more descriptors specify a time window that is inclusive of the time period to be described linguistically.