A man trying to do some promotions for a new product in town.
There is a man working on items for a new product
The present tense is inferable by the words "There is" which is missing in the first sentence. The fact that the man is trying to do some promotions does not mean he is working.
exists e1 p1 x1 x2.(a_topic(x1) & Topic(e1,p1) & Actor(e1,x2) & v_try(e1) & exists e2 s1 x3 x4 x5.(Theme(e2,x3) & Actor(e2,x2) & v_do(e2) & for(x3,x4) & in(x4,x5) & n_town(x5) & n_product(x4) & a_new(s1) & Theme(s1,x4) & n_promotion(x3)) & (x1 = x2) & n_man(x1))
exists p1 x1 e1 s1 x2 x3 x4 x5.((x1 = x2) & on(e1,x4) & for(x4,x5) & n_product(x5) & a_new(s1) & Theme(s1,x5) & n_item(x4) & Actor(e1,x3) & v_work(e1) & (x2 = x3) & n_man(x2))