ものがあるStrong judgement, There is something, Feel strongly that

ものがある is an interesting grammar structure in Japanese that is used to declare that something has a particular trait of (A), according to the speaker's subjective opinion. Often, ものがある is translated as 'I feel strongly that (A)', or 'there is something (A) about (B)'. The latter meaning is very close to the literal translation here, as もの 'thing', がある 'there is' implies that the speaker strongly senses the presence of (A) within (B), even if they themselves cannot figure out why they feel that way.

ものがある is primarily seen following verbs in either their dictionary or negated forms, い-Adjectives, or な-Adjectives followed by な.

As ものがある emphasizes the existence of (A) within (B), it is very common for the emphasized には to also be used in place of に when highlighting the topic.

Caution

Although 'I feel strongly that (A)' is a common interpretation of ものがある, it is important to remember that the actual thing that is generating that feeling within the speaker may either be very strong, or very weak. In other words, ものがある may be used even when something isn't obvious about (A), so long as the speaker themselves feel strongly about it.

Fun-fact

目(め)を見張(みは)るものがある is a set phrase that is a combination of 目(め)を見張(みは)る 'to be astonished', and ものがある. In most cases, this expression just means that (B) is extremely surprising or impressive.