Skipping unuseful data from the string

Hi there im having a large string from the server and want using gsm sim900 of about 100 characters including spaces commas brackets i want to skip all those and want to store them to a variable The string is like

{"coord":{"lon":75.9,"lat":22.72},"weather":[{"id":721,"main":"Haze","description":"haze","icon":"50n"}],"base":"stations","main":{"temp":24,"pressure":1008,"humidity":94,"temp_min":24,"temp_max":24},"visibility":5000,"wind":{"speed":2.6,"deg":270},"clouds":{"all":40},"dt":1533837600,"sys":{"type":1,"id":7768,"message":0.0023,"country":"IN","sunrise":1533774664,"sunset":1533821538},"id":1269743,"name":"Indore","cod":200}

All i want just coord lat long and the remaining things In a single variable can be more than one

Pls help!!

Arduino JSON Library

In a single variable can be more than one

What was that nonsense supposed to mean?