er, prep.indicates specific (as opposed to non-specific) object noun phrase in certain constructions [similar to how 'the' is different from 'a']; used to precede the object of locational, directional, source, temporal, and causal phrases.

in; at; on; to; from; of; out of; because of; for; with; by means of; about.
er
a
a
a
e
el
er
a
ak
er
a
eracont.er a
racont.er a
Examples:
> I like coffee more than tea.
> The old man is teaching the boy how to carve canoes.
> Droteo allowed Toki to go swimming.
> My love for you causes me pain.
> Satsko failed the test.
Proverbs:
> It's like the rat of Ngerard, which eats up all your coconuts and (then) all of ours.
It's a decision, plan etc. that will backfire. A pet rat owned by Mad, chief of Ngaraard, ate the coconuts of most of the chief's neighbors, then, still hungry, ate the chief's own coconuts.
> You're like a beetle that burns itself by flying into the fire.
You're always getting yourself into trouble.
> Like a pigeon-seeing the danger, yet it flies from cover
The pigeon sits quietly concealed until some threat appears, then it flies out, revealing itself. The idiom applies to a person who unnecessarily exposes himself to danger, leaves the house in the rain, or takes a boat out in a storm.
> It's like when the men of Ngesias clamored over what they had lost (after a party of raiders had attacked without warning and taken a head as a trophy).
The men of the Ngesias (Peleliu) village club were sitting near their clubhouse one evening when raiders broke through the brush, shouted wildly, and excaped with the head of one of them. When they recovered their senses, the men jumped to their spears and shouted threats into the darkness of the surrounding brush. Aroused by the commotion, the village chief appeared and ,when appraised of the situation, admonished them to be quiet since the fuss would gain nothing. "Don't cry over spilt milk."
> Like receiving in Airai.
According to this saying, the people of Airai (central Palau) are likely to ask for those things they have in abundance. A wealthy man asking for financial help; a person asking for a cigarette when he has a pack in his pocket.
More Examples:
> There's a lot of good singers these days.
> I'm smirking at the people working for the government, do they think they own these government vehicles when they're behind the wheels.
> And you, where were you born?
> I had an affair with my brother in laws sister.
> Put the cooked bananas in a plate.

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