I want to marry a girl in outer nation there.
Is the use of 'there' is justified?
I would like to establish a position preferably without him getting a grain of sand in his face.
When it says 'in', we are specifically talking your parts in which sand can go in-mouth,ear,eyes,etc.When I say, 'I slap you on your face',I mean parts -like chick,forehead,etc.Am I right or the sentence has a problem?