Help with SQL$,$ please!

We have the following database: world

CREATE TABLE public.city $($

id int$4$ NOT NULL,

"name" text NOT NULL,

countrycode bpchar$(3)$ NOT NULL,

district text NOT NULL,

population int$4$ NOT NULL,

CONSTRAINT city$\_$pkey PRIMARY KEY $($id$)$

$)$;

$--$ public.city foreign keys

ALTER TABLE public.city ADD CONSTRAINT city$\_$fk FOREIGN KEY $($countrycode$)$ REFERENCES public.country$($code$)$;

CREATE TABLE public.country $($

code bpchar$(3)$ NOT NULL,

"name" text NOT NULL,

continent text NOT NULL,

region text NOT NULL,

surfacearea float$4$ NOT NULL,

indepyear int$2$ NULL,

population int$4$ NOT NULL,

lifeexpectancy float$4$ NULL,

gnp numeric$(10,2)$ NULL,

gnpold numeric$(10,2)$ NULL,

localname text NOT NULL,

governmentform text NOT NULL,

headofstate text NULL,

capital int$4$ NULL,

code$2$ bpchar$(2)$ NOT NULL,

CONSTRAINT country$\_$continent$\_$check CHECK $((($continent $=$ 'Asia'::text$)$ OR $($continent $=$ 'Europe'::text$)$ OR $($continent $=$ 'North America'::text$)$ OR $($continent $=$ 'Africa'::text$)$ OR $($continent $=$ 'Oceania'::text$)$ OR $($continent $=$ 'Antarctica'::text$)$ OR $($continent $=$ 'South America'::text$))),$

CONSTRAINT country$\_$pkey PRIMARY KEY $($code$)$

$)$;

$--$ public.country foreign keys

ALTER TABLE public.country ADD CONSTRAINT country$\_$capital$\_$fkey FOREIGN KEY $($capital$)$ REFERENCES public.city$($id$)$;

CREATE TABLE public.countrylanguage $($

countrycode bpchar$(3)$ NOT NULL,

"language" text NOT NULL,

isofficial bool NOT NULL,

percentage float$4$ NOT NULL,

CONSTRAINT countrylanguage$\_$pkey PRIMARY KEY $($countrycode$,$ language$)$

$)$;

$--$ public.countrylanguage foreign keys

ALTER TABLE public.countrylanguage ADD CONSTRAINT countrylanguage$\_$countrycode$\_$fkey FOREIGN KEY $($countrycode$)$ REFERENCES public.country$($code$)$;

Write a query to "world" database to find country with surface area under $200000$ wich has the greatest number of people who speak English.

What country has more than $4$ words in its local name and has area per capita $>0\mathrm{.}02?$

Write a SQL query to find out which world$$s capital has the least population?