Given the sentence "A man dressed in all white is talking to the people seated on the dirt floor." is it true that "A motivational speaker is talking to his audience."?
Let’s work this out in a step by step way to be sure we have the right answer.
it is not possible to tell
Not because the there is a man dressed in white means that he is a motivational speaker.

.

So, the answer is it is not possible to tell