What is the fine-grained topic of the following text: An EMD motor leads the daily Tulsa, OK manifest train out of rural area of Valentine as it makes its way towards the Colorado River and the next changing point of Needles, Calif.
High winds blow snow across the double main and US-30/287 as Union Pacific SD70AH No. Only return the topic.
Train journey from Tulsa, OK to Needles, Calif.