Fix grammaticality in this sentence: The problem of male erectile dysfunction was solved by the innovative development of Viagra, though it was a 'coincidence' the compound Sildenafil causes penile erection.
The problem of male erectile dysfunction was solved by the innovative development of Viagra, though it was a 'coincidence' the compound Sildenafil caused penile erection.
The word 'coincidence' is a common word in English. It is used to describe a situation where two things happen together, or where one thing happens before the other.
The word 'coincidence' is used to describe a situation where two things happen together, or where one thing happens
The problem of male erectile dysfunction was solved by the innovative development of Viagra, though it was a 'coincidence' the compound Sildenafil caused penile erection.
The sentence is grammatically correct, but the sentence is not grammatically correct.
The sentence is grammatically correct, but the sentence is not grammatically correct.
The sentence is grammatically correct, but the sentence is not grammatically correct.
The sentence is grammatically correct, but the sentence