He directed the first episode of " The Edge of Destruction " , which immediately followed " The Daleks " in season 1 , and the entire season 2 story " The Web Planet " .
Head entity: the daleks Q1768716 17 18
Tail entity: the edge of destruction Q2989836 7 8 9 10
Relation (head \u2192 tail): P155
Inverse relation (tail \u2192 head): P156