“…In order to make sense of complex scenarios to detect maritime threats, and for situational awareness in general, it has been increasingly recognised that the fusion of data relating to physical movement, such as that generated by physical sensors (i.e., hard data, which has been extensively studied for sensor data fusion), is not sufficient, but requires all available information, including data provided by humans and intelligence (i.e., soft data) as well as other operational and contextual information [5], [6]. Efforts to incorporate soft data into fusion frameworks for situational awareness have considered various types of soft data, including extant textual data in a structured or logical format [7], [8]; text annotations associated with hard data that potentially provide additional attributes for the relevant entities [9]; certain entities and concepts of interest [10]- [14] and a few simple relations between them [15] extracted from short human statements [12], social network data [13], semi-structured synthesised reports [14], maritime incident reports [10] and news articles [15]; and also semantic knowledge constructed from natural language text (albeit, without taking into account the uncertainty associated with the extracted knowledge) [16], [17].…”