rank athlete nationality time
rank
athlete
nationality
time
number
number hour min sec
number text text time
4 moses tanui kenya 1:01:45
who was the only contestant from switzerland to place in the top 50 ?
WP VBD-AUX DT JJ NN IN NNP TO VB IN DT JJ CD .
Daniel Böltz
select c2 from w where c3 = 'switzerland' and c1_number <= 50